CVE-2022-48941— Linux kernel 竞争条件问题漏洞
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存在竞争条件问题漏洞，该漏洞源于没有正确保护重置和移除流程。
可能的 ATT&CK 技术 1 AI
T1068 · Exploitation for Privilege Escalation影响版本矩阵 10
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | c503e63200c679e362afca7aca9d3dc63a0f45ed< 3c805fce07c9dbc47d8a9129c7c5458025951957 |
affected |
c503e63200c679e362afca7aca9d3dc63a0f45ed< 2a3e61de89bab6696aa28b70030eb119968c5586 |
affected | ||
c503e63200c679e362afca7aca9d3dc63a0f45ed< fadead80fe4c033b5e514fcbadd20b55c4494112 |
affected | ||
8a08142433624fd1088bc8c13639408cf4e1707c |
affected | ||
5.13.12< 5.14 |
affected | ||
5.14 |
affected | ||
< 5.14 |
unaffected | ||
5.15.26≤ 5.15.* |
unaffected | ||
| … +2 条更多 | |||
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一、 漏洞 CVE-2022-48941 基础信息
漏洞信息
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Vulnerability Title
ice: fix concurrent reset and removal of VFs
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
ice: fix concurrent reset and removal of VFs
Commit c503e63200c6 ("ice: Stop processing VF messages during teardown")
introduced a driver state flag, ICE_VF_DEINIT_IN_PROGRESS, which is
intended to prevent some issues with concurrently handling messages from
VFs while tearing down the VFs.
This change was motivated by crashes caused while tearing down and
bringing up VFs in rapid succession.
It turns out that the fix actually introduces issues with the VF driver
caused because the PF no longer responds to any messages sent by the VF
during its .remove routine. This results in the VF potentially removing
its DMA memory before the PF has shut down the device queues.
Additionally, the fix doesn't actually resolve concurrency issues within
the ice driver. It is possible for a VF to initiate a reset just prior
to the ice driver removing VFs. This can result in the remove task
concurrently operating while the VF is being reset. This results in
similar memory corruption and panics purportedly fixed by that commit.
Fix this concurrency at its root by protecting both the reset and
removal flows using the existing VF cfg_lock. This ensures that we
cannot remove the VF while any outstanding critical tasks such as a
virtchnl message or a reset are occurring.
This locking change also fixes the root cause originally fixed by commit
c503e63200c6 ("ice: Stop processing VF messages during teardown"), so we
can simply revert it.
Note that I kept these two changes together because simply reverting the
original commit alone would leave the driver vulnerable to worse race
conditions.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
N/A
来源: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 竞争条件问题漏洞
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存在竞争条件问题漏洞，该漏洞源于没有正确保护重置和移除流程。
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-2022-48941 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2022-48941 其他参考 (4)
同批安全公告 · Linux · 2024-08-22 · 共 42 条
| CVE-2022-48919 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48911 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48923 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48925 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48927 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48913 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48912 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48932 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48935 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48940 | 7.8 HIGH | Linux kernel 缓冲区错误漏洞 |
| CVE-2022-48943 | 7.1 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48933 | Linux kernel 安全漏洞 | |
| CVE-2022-48931 | Linux kernel 安全漏洞 | |
| CVE-2022-48930 | Linux kernel 安全漏洞 | |
| CVE-2022-48921 | Linux kernel 安全漏洞 | |
| CVE-2022-48934 | Linux kernel 安全漏洞 | |
| CVE-2022-48929 | Linux kernel 安全漏洞 | |
| CVE-2022-48928 | Linux kernel 安全漏洞 | |
| CVE-2022-48937 | Linux kernel 安全漏洞 | |
| CVE-2022-48926 | Linux kernel 安全漏洞 |
显示前 20 条，共 42 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2022-48941
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