clk：在遍历 clk_summary 树之前获取运行时 PM (CVE-2024-27003)

CVE编号

CVE-2024-27003

利用情况

暂无

补丁情况

N/A

披露时间

2024-05-01
漏洞描述
In the Linux kernel, the following vulnerability has been resolved:

clk: Get runtime PM before walking tree for clk_summary

Similar to the previous commit, we should make sure that all devices are
runtime resumed before printing the clk_summary through debugfs. Failure
to do so would result in a deadlock if the thread is resuming a device
to print clk state and that device is also runtime resuming in another
thread, e.g the screen is turning on and the display driver is starting
up. We remove the calls to clk_pm_runtime_{get,put}() in this path
because they're superfluous now that we know the devices are runtime
resumed. This also squashes a bug where the return value of
clk_pm_runtime_get() wasn't checked, leading to an RPM count underflow
on error paths.
解决建议
建议您更新当前系统或软件至最新版，完成漏洞的修复。
参考链接
https://git.kernel.org/stable/c/2c077fdfd09dffb31a890e5095c8ab205138a42e
https://git.kernel.org/stable/c/83ada89e4a86e2b28ea2b5113c76d6dc7560a4d0
https://git.kernel.org/stable/c/9d1e795f754db1ac3344528b7af0b17b8146f321
https://git.kernel.org/stable/c/b457105309d388e4081c716cf7b81d517ff74db4
受影响软件情况
# 类型 厂商 产品 版本 影响面
1
运行在以下环境
系统 debian_10 linux * Up to
(excluding)
4.19.304-1
运行在以下环境
系统 debian_11 linux * Up to
(excluding)
5.10.209-2
运行在以下环境
系统 fedora_38 kernel * Up to
(excluding)
6.8.8-100.fc38
运行在以下环境
系统 fedora_39 kernel * Up to
(excluding)
6.8.8-200.fc39
运行在以下环境
系统 fedora_40 kernel * Up to
(excluding)
6.8.8-300.fc40
CVSS3评分
N/A
  • 攻击路径
    N/A
  • 攻击复杂度
    N/A
  • 权限要求
    N/A
  • 影响范围
    N/A
  • 用户交互
    N/A
  • 可用性
    N/A
  • 保密性
    N/A
  • 完整性
    N/A
N/A
CWE-ID 漏洞类型
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