CVE-2023-53240

一、漏洞信息
 漏洞编号：[CVE-2023-53240](https://nvd.nist.gov/vuln/detail/CVE-2023-53240)
 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.x分值：
  BaseScore：5.5 Medium
  Vector：CVSS:3.1/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:xsk: check IFF_UP earlier in Tx pathXsk Tx can be triggered via either sendmsg() or poll() syscalls. Thesetwo paths share a call to common function xsk_xmit() which has twosanity checks within. A pseudo code example to show the two paths:__xsk_sendmsg() :                       xsk_poll():if (unlikely(!xsk_is_bound(xs)))        if (unlikely(!xsk_is_bound(xs)))    return -ENXIO;                          return mask;if (unlikely(need_wait))                (...)    return -EOPNOTSUPP;                 xsk_xmit()mark napi id(...)xsk_xmit()xsk_xmit():if (unlikely(!(xs->dev->flags & IFF_UP)))	return -ENETDOWN;if (unlikely(!xs->tx))	return -ENOBUFS;As it can be observed above, in sendmsg() napi id can be marked oninterface that was not brought up and this causes a NULL ptrdereference:[31757.505631] BUG: kernel NULL pointer dereference, address: 0000000000000018[31757.512710] #PF: supervisor read access in kernel mode[31757.517936] #PF: error_code(0x0000) - not-present page[31757.523149] PGD 0 P4D 0[31757.525726] Oops: 0000 [#1] PREEMPT SMP NOPTI[31757.530154] CPU: 26 PID: 95641 Comm: xdpsock Not tainted 6.2.0-rc5+ #40[31757.536871] Hardware name: Intel Corporation S2600WFT/S2600WFT, BIOS SE5C620.86B.02.01.0008.031920191559 03/19/2019[31757.547457] RIP: 0010:xsk_sendmsg+0xde/0x180[31757.551799] Code: 00 75 a2 48 8b 00 a8 04 75 9b 84 d2 74 69 8b 85 14 01 00 00 85 c0 75 1b 48 8b 85 28 03 00 00 48 8b 80 98 00 00 00 48 8b 40 20 <8b> 40 18 89 85 14 01 00 00 8b bd 14 01 00 00 81 ff 00 01 00 00 0f[31757.570840] RSP: 0018:ffffc90034f27dc0 EFLAGS: 00010246[31757.576143] RAX: 0000000000000000 RBX: ffffc90034f27e18 RCX: 0000000000000000[31757.583389] RDX: 0000000000000001 RSI: ffffc90034f27e18 RDI: ffff88984cf3c100[31757.590631] RBP: ffff88984714a800 R08: ffff88984714a800 R09: 0000000000000000[31757.597877] R10: 0000000000000001 R11: 0000000000000000 R12: 00000000fffffffa[31757.605123] R13: 0000000000000000 R14: 0000000000000003 R15: 0000000000000000[31757.612364] FS:  00007fb4c5931180(0000) GS:ffff88afdfa00000(0000) knlGS:0000000000000000[31757.620571] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033[31757.626406] CR2: 0000000000000018 CR3: 000000184b41c003 CR4: 00000000007706e0[31757.633648] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000[31757.640894] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400[31757.648139] PKRU: 55555554[31757.650894] Call Trace:[31757.653385]  <TASK>[31757.655524]  sock_sendmsg+0x8f/0xa0[31757.659077]  ? sockfd_lookup_light+0x12/0x70[31757.663416]  __sys_sendto+0xfc/0x170[31757.667051]  ? do_sched_setscheduler+0xdb/0x1b0[31757.671658]  __x64_sys_sendto+0x20/0x30[31757.675557]  do_syscall_64+0x38/0x90[31757.679197]  entry_SYSCALL_64_after_hwframe+0x72/0xdc[31757.687969] Code: 8e f6 ff 44 8b 4c 24 2c 4c 8b 44 24 20 41 89 c4 44 8b 54 24 28 48 8b 54 24 18 b8 2c 00 00 00 48 8b 74 24 10 8b 7c 24 08 0f 05 <48> 3d 00 f0 ff ff 77 3a 44 89 e7 48 89 44 24 08 e8 b5 8e f6 ff 48[31757.707007] RSP: 002b:00007ffd49c73c70 EFLAGS: 00000293 ORIG_RAX: 000000000000002c[31757.714694] RAX: ffffffffffffffda RBX: 000055a996565380 RCX: 00007fb4c5727c16[31757.721939] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003[31757.729184] RBP: 0000000000000040 R08: 0000000000000000 R09: 0000000000000000[31757.736429] R10: 0000000000000040 R11: 0000000000000293 R12: 0000000000000000[31757.743673] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000[31757.754940]  </TASK>To fix this, let s make xsk_xmit a function that will be responsible forgeneric Tx, where RCU is handled accordingly and pull out sanity checksand xs->zc handling. Populate sanity checks to __xsk_sendmsg() andxsk_poll().
 漏洞公开时间：2025-09-15 23:15:51
 漏洞创建时间：2025-09-16 00:02:14
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2023-53240
<details>
<summary>更多参考(点击展开)</summary>

| 参考来源 | 参考链接 | 来源链接 |
| ------- | -------- | -------- |
|  | https://git.kernel.org/stable/c/cecc68559cd57fffb2be50685f262b9af2318e16 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2023-53240 |  |
|  | https://lore.kernel.org/linux-cve-announce/2025091516-CVE-2023-53240-c379@gregkh/T/#u |  |
|  | https://security-tracker.debian.org/tracker/CVE-2023-53240 |  |
|  | https://lore.kernel.org/linux-cve-announce/2025091516-CVE-2023-53240-c379@gregkh/T |  |
|  | https://git.kernel.org/stable/c/ffe19750e68d0bb21e8110b398346eef20b156a7 |  |
|  | https://bugzilla.redhat.com/show_bug.cgi?id=2395413 |  |
|  | https://www.cve.org/CVERecord?id=CVE-2023-53240 |  |
|  | https://docs.bell-sw.com/security/cves/CVE-2023-53240 |  |
|  | https://git.kernel.org/stable/c/1596dae2f17ec5c6e8c8f0e3fec78c5ae55c1e0b |  |

</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:
  七彩瞬析开源风险感知平台
 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  |
| ------- | -------- | ------- | -------- | --------- |
| gregkh/linux |  | https://git.kernel.org/stable/c/cecc68559cd57fffb2be50685f262b9af2318e16.patch |  | ljqc |
| gregkh/linux |  | https://git.kernel.org/stable/c/ffe19750e68d0bb21e8110b398346eef20b156a7 |  | ljqc |
| gregkh/linux |  | https://git.kernel.org/stable/c/1596dae2f17ec5c6e8c8f0e3fec78c5ae55c1e0b |  | ljqc |
|  |  | https://git.kernel.org/stable/c/cecc68559cd57fffb2be50685f262b9af2318e16 |  | cvelistv5 |
|  |  | https://git.kernel.org/stable/c/ffe19750e68d0bb21e8110b398346eef20b156a7 |  | cvelistv5 |
|  |  | https://git.kernel.org/stable/c/1596dae2f17ec5c6e8c8f0e3fec78c5ae55c1e0b |  | cvelistv5 |

</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:xsk: check IFF_UP earlier in Tx pathXsk Tx can be triggered via either sendmsg() or poll() syscalls. Thesetwo paths share a call to common function xsk_xmit() which has twosanity checks within. A pseudo code example to show the two paths:__xsk_sendmsg() :                       xsk_poll():if (unlikely(!xsk_is_bound(xs)))        if (unlikely(!xsk_is_bound(xs)))    return -ENXIO;                          return mask;if (unlikely(need_wait))                (...)    return -EOPNOTSUPP;                 xsk_xmit()mark napi id(...)xsk_xmit()xsk_xmit():if (unlikely(!(xs-&gt;dev-&gt;flags &amp; IFF_UP)))return -ENETDOWN;if (unlikely(!xs-&gt;tx))return -ENOBUFS;As it can be observed above, in sendmsg() napi id can be marked oninterface that was not brought up and this causes a NULL ptrdereference:[31757.505631] BUG: kernel NULL pointer dereference, address: 0000000000000018[31757.512710] #PF: supervisor read access in kernel mode[31757.517936] #PF: error_code(0x0000) - not-present page[31757.523149] PGD 0 P4D 0[31757.525726] Oops: 0000 [#1] PREEMPT SMP NOPTI[31757.530154] CPU: 26 PID: 95641 Comm: xdpsock Not tainted 6.2.0-rc5+ #40[31757.536871] Hardware name: Intel Corporation S2600WFT/S2600WFT, BIOS SE5C620.86B.02.01.0008.031920191559 03/19/2019[31757.547457] RIP: 0010:xsk_sendmsg+0xde/0x180[31757.551799] Code: 00 75 a2 48 8b 00 a8 04 75 9b 84 d2 74 69 8b 85 14 01 00 00 85 c0 75 1b 48 8b 85 28 03 00 00 48 8b 80 98 00 00 00 48 8b 40 20 &lt;8b&gt; 40 18 89 85 14 01 00 00 8b bd 14 01 00 00 81 ff 00 01 00 00 0f[31757.570840] RSP: 0018:ffffc90034f27dc0 EFLAGS: 00010246[31757.576143] RAX: 0000000000000000 RBX: ffffc90034f27e18 RCX: 0000000000000000[31757.583389] RDX: 0000000000000001 RSI: ffffc90034f27e18 RDI: ffff88984cf3c100[31757.590631] RBP: ffff88984714a800 R08: ffff88984714a800 R09: 0000000000000000[31757.597877] R10: 0000000000000001 R11: 0000000000000000 R12: 00000000fffffffa[31757.605123] R13: 0000000000000000 R14: 0000000000000003 R15: 0000000000000000[31757.612364] FS:  00007fb4c5931180(0000) GS:ffff88afdfa00000(0000) knlGS:0000000000000000[31757.620571] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033[31757.626406] CR2: 0000000000000018 CR3: 000000184b41c003 CR4: 00000000007706e0[31757.633648] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000[31757.640894] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400[31757.648139] PKRU: 55555554[31757.650894] Call Trace:[31757.653385]  &lt;TASK&gt;[31757.655524]  sock_sendmsg+0x8f/0xa0[31757.659077]  ? sockfd_lookup_light+0x12/0x70[31757.663416]  __sys_sendto+0xfc/0x170[31757.667051]  ? do_sched_setscheduler+0xdb/0x1b0[31757.671658]  __x64_sys_sendto+0x20/0x30[31757.675557]  do_syscall_64+0x38/0x90[31757.679197]  entry_SYSCALL_64_after_hwframe+0x72/0xdc[31757.687969] Code: 8e f6 ff 44 8b 4c 24 2c 4c 8b 44 24 20 41 89 c4 44 8b 54 24 28 48 8b 54 24 18 b8 2c 00 00 00 48 8b 74 24 10 8b 7c 24 08 0f 05 &lt;48&gt; 3d 00 f0 ff ff 77 3a 44 89 e7 48 89 44 24 08 e8 b5 8e f6 ff 48[31757.707007] RSP: 002b:00007ffd49c73c70 EFLAGS: 00000293 ORIG_RAX: 000000000000002c[31757.714694] RAX: ffffffffffffffda RBX: 000055a996565380 RCX: 00007fb4c5727c16[31757.721939] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003[31757.729184] RBP: 0000000000000040 R08: 0000000000000000 R09: 0000000000000000[31757.736429] R10: 0000000000000040 R11: 0000000000000293 R12: 0000000000000000[31757.743673] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000[31757.754940]  &lt;/TASK&gt;To fix this, let s make xsk_xmit a function that will be responsible forgeneric Tx, where RCU is handled accordingly and pull out sanity checksand xs-&gt;zc handling. Populate sanity checks to __xsk_sendmsg() andxsk_poll().The Linux kernel CVE team has assigned CVE-2023-53240 to this issue.
 openEuler评分：
  5.5
 Vector：CVSS:3.1/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.master(6.12.33):不受影响
2.openEuler-20.03-LTS-SP4(4.19.90):不受影响
3.openEuler-22.03-LTS-SP3(5.10.0):不受影响
4.openEuler-22.03-LTS-SP4(5.10.0):不受影响
5.openEuler-24.03-LTS(6.6.0):不受影响
6.openEuler-24.03-LTS-Next(6.6.0):不受影响
7.openEuler-24.03-LTS-SP1(6.6.0):不受影响
8.openEuler-24.03-LTS-SP2(6.6.0):不受影响
9.openEuler-24.03-LTS-SP3(6.6.0):不受影响

修复是否涉及abi变化(是/否)：
  1.master(6.12.33):否
2.openEuler-20.03-LTS-SP4(4.19.90):否
3.openEuler-22.03-LTS-SP3(5.10.0):否
4.openEuler-22.03-LTS-SP4(5.10.0):否
5.openEuler-24.03-LTS(6.6.0):否
6.openEuler-24.03-LTS-Next(6.6.0):否
7.openEuler-24.03-LTS-SP1(6.6.0):否
8.openEuler-24.03-LTS-SP2(6.6.0):否
9.openEuler-24.03-LTS-SP3(6.6.0):否

原因说明：
  1.master(6.12.33):不受影响-漏洞代码不能被攻击者触发
2.openEuler-20.03-LTS-SP4(4.19.90):不受影响-漏洞代码不存在
3.openEuler-22.03-LTS-SP3(5.10.0):不受影响-漏洞代码不存在
4.openEuler-22.03-LTS-SP4(5.10.0):不受影响-漏洞代码不存在
5.openEuler-24.03-LTS(6.6.0):不受影响-漏洞代码不能被攻击者触发
6.openEuler-24.03-LTS-Next(6.6.0):不受影响-漏洞代码不能被攻击者触发
7.openEuler-24.03-LTS-SP1(6.6.0):不受影响-漏洞代码不能被攻击者触发
8.openEuler-24.03-LTS-SP2(6.6.0):不受影响-漏洞代码不能被攻击者触发
9.openEuler-24.03-LTS-SP3(6.6.0):不受影响-漏洞代码不能被攻击者触发

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