In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
IntheLinuxkernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In theLinux kernel,the followingvulnerability has been resolved:netfilter: bridge: replace physindevwith physinif in nf_bridge_infoAn skb canbe added to a neigh->arp_queuewhile waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skbfrom one veth toanother,the skb wouldbe added to a neigh->arp_queue ofthe bridge.As skb->dev canbereset back to nf_bridge->physindev and used, andasthere is no explicit mechanism that prevents this physindev from beenfreedunder us(for instance neigh_flush_dev doesn t cleanup skbsfromdifferent device s neighqueue) we cancrash on e.g. this stack:arp_processneigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s useplain ifindex insteadof net_devicelink. To peek into theoriginalnet_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
IntheLinuxkernel,the followingvulnerabilityhas been resolved:netfilter: bridge: replace physindev with physinifin nf_bridge_infoAn skb can be added to aneigh->arp_queue while waitingfor an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one vethtoanother, the skb wouldbe added to aneigh->arp_queue of the bridge.Asskb->dev can be reset backtonf_bridge->physindev and used, and asthere is noexplicit mechanism that prevents this physindev from beenfreed under us (forinstanceneigh_flush_dev doesn t cleanup skbs fromdifferentdevice s neigh queue) we cancrash on e.g.this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev=nf_bridge->physindev br_handle_frame_finishLet s use plain ifindexinstead of net_devicelink. To peekinto theoriginal net_device wewill use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_processneigh_updateskb=__skb_dequeue(&neigh->arp_queue)neigh_resolve_output(..., skb)...br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slowskb->dev = nf_bridge->physindevbr_handle_frame_finishLet s use plain ifindex instead ofnet_devicelink. To peek into theoriginal net_device we will usedev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply.Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from oneveth toanother, the skb would be added to a neigh->arp_queueofthe bridge.Asskb->dev can be reset back to nf_bridge->physindev and used, and asthereis no explicit mechanism that preventsthis physindev from beenfreed under us(for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev=nf_bridge->physindev br_handle_frame_finishLet s use plainifindex instead ofnet_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe touse it or we don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
IntheLinuxkernel,thefollowing vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->devcan be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb wouldbe added to a neigh->arp_queue of the bridge.As skb->dev canbereset back tonf_bridge->physindev and used, and asthere isno explicit mechanism thatprevents this physindev from beenfreedunder us (for instanceneigh_flush_devdoesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(...,skb) ... br_nf_dev_xmitbr_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLetsuse plain ifindex instead of net_devicelink. To peek intotheoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it anddrop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to aneigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn tcleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb =__skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev =nf_bridge->physindev br_handle_frame_finishLet suse plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don tget it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added toa neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesnt cleanup skbs fromdifferent devices neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev= nf_bridge->physindev br_handle_frame_finishLets use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we dont get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
In the Linux kernel, the following vulnerability has beenresolved:netfilter: bridge: replace physindev with physinifin nf_bridge_infoAnskb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->devcan be different to neigh sneigh->dev. Forinstancein case ofbridgingdnated skb fromone veth toanother, the skbwould be added to aneigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that preventsthis physindev from beenfreed under us (for instanceneigh_flush_dev doesn t cleanup skbs fromdifferent device sneigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(...,skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLets use plain ifindex insteadofnet_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thuseither wegetdevice and are safe to use it orwe don t get it and drop skb.
In the Linux kernel, the following vulnerability has been resolved:netfilter: bridge: replace physindev with physinif in nf_bridge_infoAn skb can be added to a neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different to neigh sneigh->dev. For instance in case of bridging dnated skb from one veth toanother, the skb would be added to a neigh->arp_queue of the bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev from beenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we can crash on e.g. this stack:arp_process neigh_update skb = __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev = nf_bridge->physindev br_handle_frame_finishLet s use plain ifindex instead of net_device link. To peek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget device and are safe to use it or we don t get it and drop skb.
| linux | | https://git.kernel.org/linus/9874808878d9eed407e3977fd11fee49de1e1d86 | https://git.kernel.org/linus/c4e70a87d975d1f561a00abfe2d3cefa2a486c95 | ubuntu |
</details>
二、漏洞分析结构反馈
影响性分析说明:
IntheLinuxkernel, the following vulnerability has been resolved:netfilter:bridge: replace physindev with physinif in nf_bridge_infoAnskb can be added toa neigh->arp_queue while waiting for an arpreply. Where original skb s skb->dev can be different toneigh sneigh->dev. For instance in case ofbridgingdnated skbfrom oneveth toanother,the skb would be added to aneigh->arp_queue ofthe bridge.As skb->dev can be reset back to nf_bridge->physindev and used, and asthere is no explicit mechanism that prevents this physindev frombeenfreed under us (for instance neigh_flush_dev doesn t cleanup skbs fromdifferent device s neigh queue) we cancrash on e.g. this stack:arp_process neigh_update skb= __skb_dequeue(&neigh->arp_queue) neigh_resolve_output(..., skb) ... br_nf_dev_xmit br_nf_pre_routing_finish_bridge_slow skb->dev=nf_bridge->physindev br_handle_frame_finishLet s use plain ifindexinstead of net_device link.Topeek into theoriginal net_device we will use dev_get_by_index_rcu(). Thus either weget deviceand are safeto use it or we don t get it anddrop skb.