CVE-2024-50256

一、漏洞信息
 漏洞编号：[CVE-2024-50256](https://nvd.nist.gov/vuln/detail/CVE-2024-50256)
 漏洞归属组件：[kernel](https://gitee.com/src-openeuler/kernel)
 漏洞归属的版本：4.19.140,4.19.194,4.19.90,5.10.0,6.1.19,6.4.0,6.6.0
 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:netfilter: nf_reject_ipv6: fix potential crash in nf_send_reset6()I got a syzbot report without a repro [1] crashing in nf_send_reset6()I think the issue is that dev->hard_header_len is zero, and we attemptlater to push an Ethernet header.Use LL_MAX_HEADER, as other functions in net/ipv6/netfilter/nf_reject_ipv6.c.[1]skbuff: skb_under_panic: text:ffffffff89b1d008 len:74 put:14 head:ffff88803123aa00 data:ffff88803123a9f2 tail:0x3c end:0x140 dev:syz_tun kernel BUG at net/core/skbuff.c:206 !Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTICPU: 0 UID: 0 PID: 7373 Comm: syz.1.568 Not tainted 6.12.0-rc2-syzkaller-00631-g6d858708d465 #0Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:skb_panic net/core/skbuff.c:206 [inline] RIP: 0010:skb_under_panic+0x14b/0x150 net/core/skbuff.c:216Code: 0d 8d 48 c7 c6 60 a6 29 8e 48 8b 54 24 08 8b 0c 24 44 8b 44 24 04 4d 89 e9 50 41 54 41 57 41 56 e8 ba 30 38 02 48 83 c4 20 90 <0f> 0b 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3RSP: 0018:ffffc900045269b0 EFLAGS: 00010282RAX: 0000000000000088 RBX: dffffc0000000000 RCX: cd66dacdc5d8e800RDX: 0000000000000000 RSI: 0000000000000200 RDI: 0000000000000000RBP: ffff88802d39a3d0 R08: ffffffff8174afec R09: 1ffff920008a4cccR10: dffffc0000000000 R11: fffff520008a4ccd R12: 0000000000000140R13: ffff88803123aa00 R14: ffff88803123a9f2 R15: 000000000000003cFS:  00007fdbee5ff6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033CR2: 0000000000000000 CR3: 000000005d322000 CR4: 00000000003526f0DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400Call Trace: <TASK>  skb_push+0xe5/0x100 net/core/skbuff.c:2636  eth_header+0x38/0x1f0 net/ethernet/eth.c:83  dev_hard_header include/linux/netdevice.h:3208 [inline]  nf_send_reset6+0xce6/0x1270 net/ipv6/netfilter/nf_reject_ipv6.c:358  nft_reject_inet_eval+0x3b9/0x690 net/netfilter/nft_reject_inet.c:48  expr_call_ops_eval net/netfilter/nf_tables_core.c:240 [inline]  nft_do_chain+0x4ad/0x1da0 net/netfilter/nf_tables_core.c:288  nft_do_chain_inet+0x418/0x6b0 net/netfilter/nft_chain_filter.c:161  nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]  nf_hook_slow+0xc3/0x220 net/netfilter/core.c:626  nf_hook include/linux/netfilter.h:269 [inline]  NF_HOOK include/linux/netfilter.h:312 [inline]  br_nf_pre_routing_ipv6+0x63e/0x770 net/bridge/br_netfilter_ipv6.c:184  nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]  nf_hook_bridge_pre net/bridge/br_input.c:277 [inline]  br_handle_frame+0x9fd/0x1530 net/bridge/br_input.c:424  __netif_receive_skb_core+0x13e8/0x4570 net/core/dev.c:5562  __netif_receive_skb_one_core net/core/dev.c:5666 [inline]  __netif_receive_skb+0x12f/0x650 net/core/dev.c:5781  netif_receive_skb_internal net/core/dev.c:5867 [inline]  netif_receive_skb+0x1e8/0x890 net/core/dev.c:5926  tun_rx_batched+0x1b7/0x8f0 drivers/net/tun.c:1550  tun_get_user+0x3056/0x47e0 drivers/net/tun.c:2007  tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053  new_sync_write fs/read_write.c:590 [inline]  vfs_write+0xa6d/0xc90 fs/read_write.c:683  ksys_write+0x183/0x2b0 fs/read_write.c:736  do_syscall_x64 arch/x86/entry/common.c:52 [inline]  do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7fRIP: 0033:0x7fdbeeb7d1ffCode: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 c9 8d 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 1c 8e 02 00 48RSP: 002b:00007fdbee5ff000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001RAX: ffffffffffffffda RBX: 00007fdbeed36058 RCX: 00007fdbeeb7d1ffRDX: 000000000000008e RSI: 0000000020000040 RDI: 00000000000000c8RBP: 00007fdbeebf12be R08: 0000000---truncated---
 漏洞公开时间：2024-11-09 19:15:11
 漏洞创建时间：2024-11-09 19:37:35
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2024-50256
<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/4ed234fe793f27a3b151c43d2106df2ff0d81aac |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/4f7b586aae53c2ed820661803da8ce18b1361921 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/f85b057e34419e5ec0583a65078a11ccc1d4540a |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/fef63832317d9d24e1214cdd8f204d02ebdf8499 |  |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-50256 | https://bugzilla.suse.com/show_bug.cgi?id=1233200 |
| suse_bugzilla | https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-50256.mbox | https://bugzilla.suse.com/show_bug.cgi?id=1233200 |
| suse_bugzilla | https://git.kernel.org/stable/c/4f7b586aae53c2ed820661803da8ce18b1361921 | https://bugzilla.suse.com/show_bug.cgi?id=1233200 |
| suse_bugzilla | https://git.kernel.org/stable/c/fef63832317d9d24e1214cdd8f204d02ebdf8499 | https://bugzilla.suse.com/show_bug.cgi?id=1233200 |
| suse_bugzilla | https://git.kernel.org/stable/c/f85b057e34419e5ec0583a65078a11ccc1d4540a | https://bugzilla.suse.com/show_bug.cgi?id=1233200 |
| suse_bugzilla | https://git.kernel.org/stable/c/4ed234fe793f27a3b151c43d2106df2ff0d81aac | https://bugzilla.suse.com/show_bug.cgi?id=1233200 |
| suse_bugzilla | https://www.cve.org/CVERecord?id=CVE-2024-50256 | https://bugzilla.suse.com/show_bug.cgi?id=1233200 |
| redhat_bugzilla | https://lore.kernel.org/linux-cve-announce/2024110938-CVE-2024-50256-5b66@gregkh/T | https://bugzilla.redhat.com/show_bug.cgi?id=2324889 |
| redhat_bugzilla | https://access.redhat.com/errata/RHSA-2024:10944 | https://bugzilla.redhat.com/show_bug.cgi?id=2324889 |
| redhat_bugzilla | https://access.redhat.com/errata/RHSA-2024:10943 | https://bugzilla.redhat.com/show_bug.cgi?id=2324889 |
| redhat_bugzilla | https://access.redhat.com/errata/RHSA-2025:1658 | https://bugzilla.redhat.com/show_bug.cgi?id=2324889 |
| debian |  | https://security-tracker.debian.org/tracker/CVE-2024-50256 |
| anolis |  | https://anas.openanolis.cn/cves/detail/CVE-2024-50256 |
| mageia |  | http://advisories.mageia.org/MGASA-2024-0368.html |
| osv | https://git.kernel.org/stable/c/4ed234fe793f27a3b151c43d2106df2ff0d81aac | https://osv.dev/vulnerability/CVE-2024-50256 |
| osv | https://git.kernel.org/stable/c/4f7b586aae53c2ed820661803da8ce18b1361921 | https://osv.dev/vulnerability/CVE-2024-50256 |
| osv | https://git.kernel.org/stable/c/f85b057e34419e5ec0583a65078a11ccc1d4540a | https://osv.dev/vulnerability/CVE-2024-50256 |
| osv | https://git.kernel.org/stable/c/fef63832317d9d24e1214cdd8f204d02ebdf8499 | https://osv.dev/vulnerability/CVE-2024-50256 |
| osv | https://security-tracker.debian.org/tracker/CVE-2024-50256 | https://osv.dev/vulnerability/CVE-2024-50256 |

</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/4ed234fe793f27a3b151c43d2106df2ff0d81aac |  | nvd |
|  |  | https://git.kernel.org/stable/c/4f7b586aae53c2ed820661803da8ce18b1361921 |  | nvd |
|  |  | https://git.kernel.org/stable/c/f85b057e34419e5ec0583a65078a11ccc1d4540a |  | nvd |
|  |  | https://git.kernel.org/stable/c/fef63832317d9d24e1214cdd8f204d02ebdf8499 |  | nvd |
| linux_kernel | 6.1.116 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=4f7b586aae53Issue | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=c8d7b98bec43 | linuxkernelcves |
| linux_kernel | 6.6.60 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=fef63832317dIssue | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=c8d7b98bec43 | linuxkernelcves |
| linux_kernel | 6.11.7 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=f85b057e3441Issue | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=c8d7b98bec43 | linuxkernelcves |
| linux_kernel | 6.12-rc6 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=4ed234fe793fPlease | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=c8d7b98bec43 | linuxkernelcves |

</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: nf_reject_ipv6: fix potential crash in nf_send_reset6()I got a syzbot report without a repro [1] crashing in nf_send_reset6()I think the issue is that dev->hard_header_len is zero, and we attemptlater to push an Ethernet header.Use LL_MAX_HEADER, as other functions in net/ipv6/netfilter/nf_reject_ipv6.c.[1]skbuff: skb_under_panic: text:ffffffff89b1d008 len:74 put:14 head:ffff88803123aa00 data:ffff88803123a9f2 tail:0x3c end:0x140 dev:syz_tun kernel BUG at net/core/skbuff.c:206 !Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTICPU: 0 UID: 0 PID: 7373 Comm: syz.1.568 Not tainted 6.12.0-rc2-syzkaller-00631-g6d858708d465 #0Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:skb_panic net/core/skbuff.c:206 [inline] RIP: 0010:skb_under_panic+0x14b/0x150 net/core/skbuff.c:216Code: 0d 8d 48 c7 c6 60 a6 29 8e 48 8b 54 24 08 8b 0c 24 44 8b 44 24 04 4d 89 e9 50 41 54 41 57 41 56 e8 ba 30 38 02 48 83 c4 20 90 <0f> 0b 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3RSP: 0018:ffffc900045269b0 EFLAGS: 00010282RAX: 0000000000000088 RBX: dffffc0000000000 RCX: cd66dacdc5d8e800RDX: 0000000000000000 RSI: 0000000000000200 RDI: 0000000000000000RBP: ffff88802d39a3d0 R08: ffffffff8174afec R09: 1ffff920008a4cccR10: dffffc0000000000 R11: fffff520008a4ccd R12: 0000000000000140R13: ffff88803123aa00 R14: ffff88803123a9f2 R15: 000000000000003cFS:  00007fdbee5ff6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033CR2: 0000000000000000 CR3: 000000005d322000 CR4: 00000000003526f0DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400Call Trace: <TASK>  skb_push+0xe5/0x100 net/core/skbuff.c:2636  eth_header+0x38/0x1f0 net/ethernet/eth.c:83  dev_hard_header include/linux/netdevice.h:3208 [inline]  nf_send_reset6+0xce6/0x1270 net/ipv6/netfilter/nf_reject_ipv6.c:358  nft_reject_inet_eval+0x3b9/0x690 net/netfilter/nft_reject_inet.c:48  expr_call_ops_eval net/netfilter/nf_tables_core.c:240 [inline]  nft_do_chain+0x4ad/0x1da0 net/netfilter/nf_tables_core.c:288  nft_do_chain_inet+0x418/0x6b0 net/netfilter/nft_chain_filter.c:161  nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]  nf_hook_slow+0xc3/0x220 net/netfilter/core.c:626  nf_hook include/linux/netfilter.h:269 [inline]  NF_HOOK include/linux/netfilter.h:312 [inline]  br_nf_pre_routing_ipv6+0x63e/0x770 net/bridge/br_netfilter_ipv6.c:184  nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]  nf_hook_bridge_pre net/bridge/br_input.c:277 [inline]  br_handle_frame+0x9fd/0x1530 net/bridge/br_input.c:424  __netif_receive_skb_core+0x13e8/0x4570 net/core/dev.c:5562  __netif_receive_skb_one_core net/core/dev.c:5666 [inline]  __netif_receive_skb+0x12f/0x650 net/core/dev.c:5781  netif_receive_skb_internal net/core/dev.c:5867 [inline]  netif_receive_skb+0x1e8/0x890 net/core/dev.c:5926  tun_rx_batched+0x1b7/0x8f0 drivers/net/tun.c:1550  tun_get_user+0x3056/0x47e0 drivers/net/tun.c:2007  tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053  new_sync_write fs/read_write.c:590 [inline]  vfs_write+0xa6d/0xc90 fs/read_write.c:683  ksys_write+0x183/0x2b0 fs/read_write.c:736  do_syscall_x64 arch/x86/entry/common.c:52 [inline]  do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7fRIP: 0033:0x7fdbeeb7d1ffCode: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 c9 8d 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 1c 8e 02 00 48RSP: 002b:00007fdbee5ff000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001RAX: ffffffffffffffda RBX: 00007fdbeed36058 RCX: 00007fdbeeb7d1ffRDX: 000000000000008e RSI: 0000000020000040 RDI: 00000000000000c8RBP: 00007fdbeebf12be R08: 0000000---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-20.03-LTS-SP4(4.19.90):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-24.03-LTS-SP1(6.6.0):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-SP3(5.10.0):否
3.master(6.6.0):否
4.openEuler-24.03-LTS(6.6.0):否
5.openEuler-24.03-LTS-Next(6.6.0):否
6.openEuler-22.03-LTS-SP4(5.10.0):否
7.openEuler-24.03-LTS-SP1(6.6.0):否

原因说明：
  1.openEuler-24.03-LTS(6.6.0):正常修复
2.openEuler-24.03-LTS-SP1(6.6.0):正常修复
3.openEuler-20.03-LTS-SP4(4.19.90):不修复-超出修复范围
4.openEuler-22.03-LTS-SP3(5.10.0):不修复-超出修复范围
5.openEuler-22.03-LTS-SP4(5.10.0):不修复-超出修复范围
6.master(6.6.0):不受影响-漏洞代码不能被攻击者触发
7.openEuler-24.03-LTS-Next(6.6.0):不受影响-漏洞代码不能被攻击者触发

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2025-1097

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