CVE-2024-50046

一、漏洞信息
 漏洞编号：[CVE-2024-50046](https://nvd.nist.gov/vuln/detail/CVE-2024-50046)
 漏洞归属组件：[kernel](https://gitee.com/src-openeuler/kernel)
 漏洞归属的版本：4.19.140,4.19.194,4.19.90,5.10.0,6.1.0,6.1.14,6.1.19,6.1.5,6.1.6,6.1.8,6.4.0,6.6.0
 CVSS V3.0分值：
  BaseScore：5.5 Medium
  Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
 漏洞简述：
  In the Linux kernel, the following vulnerability has been resolved:NFSv4: Prevent NULL-pointer dereference in nfs42_complete_copies()On the node of an NFS client, some files saved in the mountpoint of theNFS server were copied to another location of the same NFS server.Accidentally, the nfs42_complete_copies() got a NULL-pointer dereferencecrash with the following syslog:[232064.838881] NFSv4: state recovery failed for open file nfs/pvc-12b5200d-cd0f-46a3-b9f0-af8f4fe0ef64.qcow2, error = -116[232064.839360] NFSv4: state recovery failed for open file nfs/pvc-12b5200d-cd0f-46a3-b9f0-af8f4fe0ef64.qcow2, error = -116[232066.588183] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000058[232066.588586] Mem abort info:[232066.588701]   ESR = 0x0000000096000007[232066.588862]   EC = 0x25: DABT (current EL), IL = 32 bits[232066.589084]   SET = 0, FnV = 0[232066.589216]   EA = 0, S1PTW = 0[232066.589340]   FSC = 0x07: level 3 translation fault[232066.589559] Data abort info:[232066.589683]   ISV = 0, ISS = 0x00000007[232066.589842]   CM = 0, WnR = 0[232066.589967] user pgtable: 64k pages, 48-bit VAs, pgdp=00002000956ff400[232066.590231] [0000000000000058] pgd=08001100ae100003, p4d=08001100ae100003, pud=08001100ae100003, pmd=08001100b3c00003, pte=0000000000000000[232066.590757] Internal error: Oops: 96000007 [#1] SMP[232066.590958] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace fscache netfs ocfs2_dlmfs ocfs2_stack_o2cb ocfs2_dlm vhost_net vhost vhost_iotlb tap tun ipt_rpfilter xt_multiport ip_set_hash_ip ip_set_hash_net xfrm_interface xfrm6_tunnel tunnel4 tunnel6 esp4 ah4 wireguard libcurve25519_generic veth xt_addrtype xt_set nf_conntrack_netlink ip_set_hash_ipportnet ip_set_hash_ipportip ip_set_bitmap_port ip_set_hash_ipport dummy ip_set ip_vs_sh ip_vs_wrr ip_vs_rr ip_vs iptable_filter sch_ingress nfnetlink_cttimeout vport_gre ip_gre ip_tunnel gre vport_geneve geneve vport_vxlan vxlan ip6_udp_tunnel udp_tunnel openvswitch nf_conncount dm_round_robin dm_service_time dm_multipath xt_nat xt_MASQUERADE nft_chain_nat nf_nat xt_mark xt_conntrack xt_comment nft_compat nft_counter nf_tables nfnetlink ocfs2 ocfs2_nodemanager ocfs2_stackglue iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ipmi_ssif nbd overlay 8021q garp mrp bonding tls rfkill sunrpc ext4 mbcache jbd2[232066.591052]  vfat fat cas_cache cas_disk ses enclosure scsi_transport_sas sg acpi_ipmi ipmi_si ipmi_devintf ipmi_msghandler ip_tables vfio_pci vfio_pci_core vfio_virqfd vfio_iommu_type1 vfio dm_mirror dm_region_hash dm_log dm_mod nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 br_netfilter bridge stp llc fuse xfs libcrc32c ast drm_vram_helper qla2xxx drm_kms_helper syscopyarea crct10dif_ce sysfillrect ghash_ce sysimgblt sha2_ce fb_sys_fops cec sha256_arm64 sha1_ce drm_ttm_helper ttm nvme_fc igb sbsa_gwdt nvme_fabrics drm nvme_core i2c_algo_bit i40e scsi_transport_fc megaraid_sas aes_neon_bs[232066.596953] CPU: 6 PID: 4124696 Comm: 10.253.166.125- Kdump: loaded Not tainted 5.15.131-9.cl9_ocfs2.aarch64 #1[232066.597356] Hardware name: Great Wall . x93 x8e...RF6260 V5/GWMSSE2GL1T, BIOS T656FBE_V3.0.18 2024-01-06[232066.597721] pstate: 20400009 (nzCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)[232066.598034] pc : nfs4_reclaim_open_state+0x220/0x800 [nfsv4][232066.598327] lr : nfs4_reclaim_open_state+0x12c/0x800 [nfsv4][232066.598595] sp : ffff8000f568fc70[232066.598731] x29: ffff8000f568fc70 x28: 0000000000001000 x27: ffff21003db33000[232066.599030] x26: ffff800005521ae0 x25: ffff0100f98fa3f0 x24: 0000000000000001[232066.599319] x23: ffff800009920008 x22: ffff21003db33040 x21: ffff21003db33050[232066.599628] x20: ffff410172fe9e40 x19: ffff410172fe9e00 x18: 0000000000000000[232066.599914] x17: 0000000000000000 x16: 0000000000000004 x15: 0000000000000000[232066.600195] x14: 0000000000000000 x13: ffff800008e685a8 x12: 00000000eac0c6e6[232066.600498] x11: 00000000000000---truncated---
 漏洞公开时间：2024-10-22 04:15:17
 漏洞创建时间：2024-10-22 05:02:15
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2024-50046
<details>
<summary>更多参考(点击展开)</summary>

| 参考来源 | 参考链接 | 来源链接 |
| ------- | -------- | -------- |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/584c019baedddec3fd634053e8fb2d8836108d38 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/632344b9efa064ca737bfcdaaaced59fd5f18ae9 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/a848c29e3486189aaabd5663bc11aea50c5bd144 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/ef9189bb15dcbe7ed3f3515aaa6fc8bf7483960d |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/f892165c564e3aab272948dbb556cc20e290c55a |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/fca41e5fa4914d12b2136c25f9dad69520b52683 |  |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-50046 | https://bugzilla.suse.com/show_bug.cgi?id=1231902 |
| suse_bugzilla | https://www.cve.org/CVERecord?id=CVE-2024-50046 | https://bugzilla.suse.com/show_bug.cgi?id=1231902 |
| suse_bugzilla | https://git.kernel.org/stable/c/584c019baedddec3fd634053e8fb2d8836108d38 | https://bugzilla.suse.com/show_bug.cgi?id=1231902 |
| suse_bugzilla | https://git.kernel.org/stable/c/632344b9efa064ca737bfcdaaaced59fd5f18ae9 | https://bugzilla.suse.com/show_bug.cgi?id=1231902 |
| suse_bugzilla | https://git.kernel.org/stable/c/a848c29e3486189aaabd5663bc11aea50c5bd144 | https://bugzilla.suse.com/show_bug.cgi?id=1231902 |
| suse_bugzilla | https://git.kernel.org/stable/c/ef9189bb15dcbe7ed3f3515aaa6fc8bf7483960d | https://bugzilla.suse.com/show_bug.cgi?id=1231902 |
| suse_bugzilla | https://git.kernel.org/stable/c/f892165c564e3aab272948dbb556cc20e290c55a | https://bugzilla.suse.com/show_bug.cgi?id=1231902 |
| suse_bugzilla | https://git.kernel.org/stable/c/fca41e5fa4914d12b2136c25f9dad69520b52683 | https://bugzilla.suse.com/show_bug.cgi?id=1231902 |
| suse_bugzilla | https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-50046.mbox | https://bugzilla.suse.com/show_bug.cgi?id=1231902 |
| redhat_bugzilla | https://lore.kernel.org/linux-cve-announce/2024102134-CVE-2024-50046-a9b4@gregkh/T | https://bugzilla.redhat.com/show_bug.cgi?id=2320602 |
| debian |  | https://security-tracker.debian.org/tracker/CVE-2024-50046 |
| mageia |  | http://advisories.mageia.org/MGASA-2024-0345.html |

</details>

漏洞分析指导链接：
  https://gitee.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md
 漏洞数据来源:
  openBrain开源漏洞感知系统
 漏洞补丁信息：
  <details>
<summary>详情(点击展开)</summary>

| 影响的包 | 修复版本 | 修复补丁 | 问题引入补丁 | 来源  |
| ------- | -------- | ------- | -------- | --------- |
|  |  | https://git.kernel.org/stable/c/584c019baedddec3fd634053e8fb2d8836108d38 |  | nvd |
|  |  | https://git.kernel.org/stable/c/632344b9efa064ca737bfcdaaaced59fd5f18ae9 |  | nvd |
|  |  | https://git.kernel.org/stable/c/a848c29e3486189aaabd5663bc11aea50c5bd144 |  | nvd |
|  |  | https://git.kernel.org/stable/c/ef9189bb15dcbe7ed3f3515aaa6fc8bf7483960d |  | nvd |
|  |  | https://git.kernel.org/stable/c/f892165c564e3aab272948dbb556cc20e290c55a |  | nvd |
|  |  | https://git.kernel.org/stable/c/fca41e5fa4914d12b2136c25f9dad69520b52683 |  | nvd |

</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:NFSv4: Prevent NULL-pointer dereference in nfs42_complete_copies()On the node of an NFS client, some files saved in the mountpoint of theNFS server were copied to another location of the same NFS server.Accidentally, the nfs42_complete_copies() got a NULL-pointer dereferencecrash with the following syslog:[232064.838881] NFSv4: state recovery failed for open file nfs/pvc-12b5200d-cd0f-46a3-b9f0-af8f4fe0ef64.qcow2, error = -116[232064.839360] NFSv4: state recovery failed for open file nfs/pvc-12b5200d-cd0f-46a3-b9f0-af8f4fe0ef64.qcow2, error = -116[232066.588183] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000058[232066.588586] Mem abort info:[232066.588701]   ESR = 0x0000000096000007[232066.588862]   EC = 0x25: DABT (current EL), IL = 32 bits[232066.589084]   SET = 0, FnV = 0[232066.589216]   EA = 0, S1PTW = 0[232066.589340]   FSC = 0x07: level 3 translation fault[232066.589559] Data abort info:[232066.589683]   ISV = 0, ISS = 0x00000007[232066.589842]   CM = 0, WnR = 0[232066.589967] user pgtable: 64k pages, 48-bit VAs, pgdp=00002000956ff400[232066.590231] [0000000000000058] pgd=08001100ae100003, p4d=08001100ae100003, pud=08001100ae100003, pmd=08001100b3c00003, pte=0000000000000000[232066.590757] Internal error: Oops: 96000007 [#1] SMP[232066.590958] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace fscache netfs ocfs2_dlmfs ocfs2_stack_o2cb ocfs2_dlm vhost_net vhost vhost_iotlb tap tun ipt_rpfilter xt_multiport ip_set_hash_ip ip_set_hash_net xfrm_interface xfrm6_tunnel tunnel4 tunnel6 esp4 ah4 wireguard libcurve25519_generic veth xt_addrtype xt_set nf_conntrack_netlink ip_set_hash_ipportnet ip_set_hash_ipportip ip_set_bitmap_port ip_set_hash_ipport dummy ip_set ip_vs_sh ip_vs_wrr ip_vs_rr ip_vs iptable_filter sch_ingress nfnetlink_cttimeout vport_gre ip_gre ip_tunnel gre vport_geneve geneve vport_vxlan vxlan ip6_udp_tunnel udp_tunnel openvswitch nf_conncount dm_round_robin dm_service_time dm_multipath xt_nat xt_MASQUERADE nft_chain_nat nf_nat xt_mark xt_conntrack xt_comment nft_compat nft_counter nf_tables nfnetlink ocfs2 ocfs2_nodemanager ocfs2_stackglue iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ipmi_ssif nbd overlay 8021q garp mrp bonding tls rfkill sunrpc ext4 mbcache jbd2[232066.591052]  vfat fat cas_cache cas_disk ses enclosure scsi_transport_sas sg acpi_ipmi ipmi_si ipmi_devintf ipmi_msghandler ip_tables vfio_pci vfio_pci_core vfio_virqfd vfio_iommu_type1 vfio dm_mirror dm_region_hash dm_log dm_mod nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 br_netfilter bridge stp llc fuse xfs libcrc32c ast drm_vram_helper qla2xxx drm_kms_helper syscopyarea crct10dif_ce sysfillrect ghash_ce sysimgblt sha2_ce fb_sys_fops cec sha256_arm64 sha1_ce drm_ttm_helper ttm nvme_fc igb sbsa_gwdt nvme_fabrics drm nvme_core i2c_algo_bit i40e scsi_transport_fc megaraid_sas aes_neon_bs[232066.596953] CPU: 6 PID: 4124696 Comm: 10.253.166.125- Kdump: loaded Not tainted 5.15.131-9.cl9_ocfs2.aarch64 #1[232066.597356] Hardware name: Great Wall . x93 x8e...RF6260 V5/GWMSSE2GL1T, BIOS T656FBE_V3.0.18 2024-01-06[232066.597721] pstate: 20400009 (nzCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)[232066.598034] pc : nfs4_reclaim_open_state+0x220/0x800 [nfsv4][232066.598327] lr : nfs4_reclaim_open_state+0x12c/0x800 [nfsv4][232066.598595] sp : ffff8000f568fc70[232066.598731] x29: ffff8000f568fc70 x28: 0000000000001000 x27: ffff21003db33000[232066.599030] x26: ffff800005521ae0 x25: ffff0100f98fa3f0 x24: 0000000000000001[232066.599319] x23: ffff800009920008 x22: ffff21003db33040 x21: ffff21003db33050[232066.599628] x20: ffff410172fe9e40 x19: ffff410172fe9e00 x18: 0000000000000000[232066.599914] x17: 0000000000000000 x16: 0000000000000004 x15: 0000000000000000[232066.600195] x14: 0000000000000000 x13: ffff800008e685a8 x12: 00000000eac0c6e6[232066.600498] x11: 00000000000000---truncated---
 openEuler评分：
  5.5
 Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
 受影响版本排查(受影响/不受影响)：
  1.openEuler-22.03-LTS-SP1(5.10.0):受影响
2.openEuler-22.03-LTS-SP3(5.10.0):受影响
3.openEuler-22.03-LTS-SP4(5.10.0):受影响
4.openEuler-24.03-LTS(6.6.0):受影响
5.openEuler-20.03-LTS-SP4(4.19.90):不受影响
6.master(6.6.0):不受影响
7.openEuler-24.03-LTS-Next(6.6.0):不受影响

修复是否涉及abi变化(是/否)：
  1.openEuler-20.03-LTS-SP4(4.19.90):否
2.openEuler-22.03-LTS-SP1(5.10.0):否
3.openEuler-22.03-LTS-SP3(5.10.0):否
4.master(6.6.0):否
5.openEuler-24.03-LTS(6.6.0):否
6.openEuler-24.03-LTS-Next(6.6.0):否
7.openEuler-22.03-LTS-SP4(5.10.0):否

原因说明：
  1.master(6.6.0):
2.openEuler-20.03-LTS-SP4(4.19.90):
3.openEuler-22.03-LTS-SP1(5.10.0):
4.openEuler-22.03-LTS-SP3(5.10.0):
5.openEuler-22.03-LTS-SP4(5.10.0):
6.openEuler-24.03-LTS(6.6.0):
7.openEuler-24.03-LTS-Next(6.6.0):

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2024-2371

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