CVE-2024-26620— 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 s390/vfio-ap 中存在安全问题。
可能的 ATT&CK 技术 1 AI
T1059.004 · Unix Shell影响版本矩阵 10
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 48cae940c31d2407d860d87c41d5f9871c0521db< d6b8d034b576f406af920a7bee81606c027b24c6 |
affected |
48cae940c31d2407d860d87c41d5f9871c0521db< c69d821197611678533fb3eb784fc823b921349a |
affected | ||
48cae940c31d2407d860d87c41d5f9871c0521db< cdd134d56138302976685e6c7bc4755450b3880e |
affected | ||
48cae940c31d2407d860d87c41d5f9871c0521db< 850fb7fa8c684a4c6bf0e4b6978f4ddcc5d43d11 |
affected | ||
6.0 |
affected | ||
< 6.0 |
unaffected | ||
6.1.76≤ 6.1.* |
unaffected | ||
6.6.15≤ 6.6.* |
unaffected | ||
| … +2 条更多 | |||
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一、 漏洞 CVE-2024-26620 基础信息
漏洞信息
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Vulnerability Title
s390/vfio-ap: always filter entire AP matrix
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
s390/vfio-ap: always filter entire AP matrix
The vfio_ap_mdev_filter_matrix function is called whenever a new adapter or
domain is assigned to the mdev. The purpose of the function is to update
the guest's AP configuration by filtering the matrix of adapters and
domains assigned to the mdev. When an adapter or domain is assigned, only
the APQNs associated with the APID of the new adapter or APQI of the new
domain are inspected. If an APQN does not reference a queue device bound to
the vfio_ap device driver, then it's APID will be filtered from the mdev's
matrix when updating the guest's AP configuration.
Inspecting only the APID of the new adapter or APQI of the new domain will
result in passing AP queues through to a guest that are not bound to the
vfio_ap device driver under certain circumstances. Consider the following:
guest's AP configuration (all also assigned to the mdev's matrix):
14.0004
14.0005
14.0006
16.0004
16.0005
16.0006
unassign domain 4
unbind queue 16.0005
assign domain 4
When domain 4 is re-assigned, since only domain 4 will be inspected, the
APQNs that will be examined will be:
14.0004
16.0004
Since both of those APQNs reference queue devices that are bound to the
vfio_ap device driver, nothing will get filtered from the mdev's matrix
when updating the guest's AP configuration. Consequently, queue 16.0005
will get passed through despite not being bound to the driver. This
violates the linux device model requirement that a guest shall only be
given access to devices bound to the device driver facilitating their
pass-through.
To resolve this problem, every adapter and domain assigned to the mdev will
be inspected when filtering the mdev's matrix.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/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 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 s390/vfio-ap 中存在安全问题。
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-2024-26620 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2024-26620 其他参考 (3)
同批安全公告 · Linux · 2024-02-29 · 共 53 条
| CVE-2023-52480 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2023-52478 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52479 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2021-47068 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52491 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52486 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26608 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26610 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26614 | 7.8 HIGH | Linux kernel安全漏洞 |
| CVE-2023-52483 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26617 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2021-47060 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2021-47061 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26611 | 7.5 HIGH | Linux kernel 安全漏洞 |
| CVE-2021-47066 | 7.1 HIGH | Linux kernel 安全漏洞 |
| CVE-2021-47055 | 7.1 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52497 | 7.1 HIGH | Linux kernel 安全漏洞 |
| CVE-2021-47056 | Linux kernel 安全漏洞 | |
| CVE-2021-47058 | Linux kernel 安全漏洞 | |
| CVE-2021-47054 | Linux kernel 安全漏洞 |
显示前 20 条，共 53 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2024-26620
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