CVE-2023-53347— Linux kernel 安全漏洞
一分钟漏洞结论
影响对象
Linux Linux
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未正确处理E-switch配对和上行链路卸载顺序，可能导致网络流量处理错误。
影响版本矩阵 8
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 04de7dda7394fa9c2b0fc9cec65661d9b4f0d04d< b17294e7aa8c39dbb9c3e28e2d1983c88b94b387 |
affected |
04de7dda7394fa9c2b0fc9cec65661d9b4f0d04d< 10cbfecc0f99f579fb170feee866c9efaab7ee47 |
affected | ||
04de7dda7394fa9c2b0fc9cec65661d9b4f0d04d< 2be5bd42a5bba1a05daedc86cf0e248210009669 |
affected | ||
5.0 |
affected | ||
< 5.0 |
unaffected | ||
6.1.31≤ 6.1.* |
unaffected | ||
6.3.5≤ 6.3.* |
unaffected | ||
6.4≤ * |
unaffected |
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一、 漏洞 CVE-2023-53347 基础信息
漏洞信息
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Vulnerability Title
net/mlx5: Handle pairing of E-switch via uplink un/load APIs
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
net/mlx5: Handle pairing of E-switch via uplink un/load APIs
In case user switch a device from switchdev mode to legacy mode, mlx5
first unpair the E-switch and afterwards unload the uplink vport.
From the other hand, in case user remove or reload a device, mlx5
first unload the uplink vport and afterwards unpair the E-switch.
The latter is causing a bug[1], hence, handle pairing of E-switch as
part of uplink un/load APIs.
[1]
In case VF_LAG is used, every tc fdb flow is duplicated to the peer
esw. However, the original esw keeps a pointer to this duplicated
flow, not the peer esw.
e.g.: if user create tc fdb flow over esw0, the flow is duplicated
over esw1, in FW/HW, but in SW, esw0 keeps a pointer to the duplicated
flow.
During module unload while a peer tc fdb flow is still offloaded, in
case the first device to be removed is the peer device (esw1 in the
example above), the peer net-dev is destroyed, and so the mlx5e_priv
is memset to 0.
Afterwards, the peer device is trying to unpair himself from the
original device (esw0 in the example above). Unpair API invoke the
original device to clear peer flow from its eswitch (esw0), but the
peer flow, which is stored over the original eswitch (esw0), is
trying to use the peer mlx5e_priv, which is memset to 0 and result in
bellow kernel-oops.
[ 157.964081 ] BUG: unable to handle page fault for address: 000000000002ce60
[ 157.964662 ] #PF: supervisor read access in kernel mode
[ 157.965123 ] #PF: error_code(0x0000) - not-present page
[ 157.965582 ] PGD 0 P4D 0
[ 157.965866 ] Oops: 0000 [#1] SMP
[ 157.967670 ] RIP: 0010:mlx5e_tc_del_fdb_flow+0x48/0x460 [mlx5_core]
[ 157.976164 ] Call Trace:
[ 157.976437 ] <TASK>
[ 157.976690 ] __mlx5e_tc_del_fdb_peer_flow+0xe6/0x100 [mlx5_core]
[ 157.977230 ] mlx5e_tc_clean_fdb_peer_flows+0x67/0x90 [mlx5_core]
[ 157.977767 ] mlx5_esw_offloads_unpair+0x2d/0x1e0 [mlx5_core]
[ 157.984653 ] mlx5_esw_offloads_devcom_event+0xbf/0x130 [mlx5_core]
[ 157.985212 ] mlx5_devcom_send_event+0xa3/0xb0 [mlx5_core]
[ 157.985714 ] esw_offloads_disable+0x5a/0x110 [mlx5_core]
[ 157.986209 ] mlx5_eswitch_disable_locked+0x152/0x170 [mlx5_core]
[ 157.986757 ] mlx5_eswitch_disable+0x51/0x80 [mlx5_core]
[ 157.987248 ] mlx5_unload+0x2a/0xb0 [mlx5_core]
[ 157.987678 ] mlx5_uninit_one+0x5f/0xd0 [mlx5_core]
[ 157.988127 ] remove_one+0x64/0xe0 [mlx5_core]
[ 157.988549 ] pci_device_remove+0x31/0xa0
[ 157.988933 ] device_release_driver_internal+0x18f/0x1f0
[ 157.989402 ] driver_detach+0x3f/0x80
[ 157.989754 ] bus_remove_driver+0x70/0xf0
[ 157.990129 ] pci_unregister_driver+0x34/0x90
[ 157.990537 ] mlx5_cleanup+0xc/0x1c [mlx5_core]
[ 157.990972 ] __x64_sys_delete_module+0x15a/0x250
[ 157.991398 ] ? exit_to_user_mode_prepare+0xea/0x110
[ 157.991840 ] do_syscall_64+0x3d/0x90
[ 157.992198 ] entry_SYSCALL_64_after_hwframe+0x46/0xb0
来源: CVE Program / CVE List V5
CVSS Information
N/A
来源: CVE Program / CVE List V5
Vulnerability Type
N/A
来源: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未正确处理E-switch配对和上行链路卸载顺序，可能导致网络流量处理错误。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2023-53347 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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同批安全公告 · Linux · 2025-09-17 · 共 56 条
| CVE-2023-53338 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-50373 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2022-50363 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2023-53360 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2023-53358 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53340 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-50368 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-50367 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-50362 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53354 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-50354 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-50355 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53335 | 7.5 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-50365 | 7.5 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53336 | Linux kernel 安全漏洞 | |
| CVE-2022-50369 | Linux kernel 安全漏洞 | |
| CVE-2022-50372 | Linux kernel 安全漏洞 | |
| CVE-2022-50371 | Linux kernel 安全漏洞 | |
| CVE-2022-50370 | Linux kernel 安全漏洞 | |
| CVE-2022-50374 | Linux kernel 安全漏洞 |
显示前 20 条，共 56 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2023-53347
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