CVE-2024-42090

pinctrl: fix deadlock in create_pinctrl() when handling -EPROBE_DEFER

Description

In the Linux kernel, the following vulnerability has been resolved: pinctrl: fix deadlock in create_pinctrl() when handling -EPROBE_DEFER In create_pinctrl(), pinctrl_maps_mutex is acquired before calling add_setting(). If add_setting() returns -EPROBE_DEFER, create_pinctrl() calls pinctrl_free(). However, pinctrl_free() attempts to acquire pinctrl_maps_mutex, which is already held by create_pinctrl(), leading to a potential deadlock. This patch resolves the issue by releasing pinctrl_maps_mutex before calling pinctrl_free(), preventing the deadlock. This bug was discovered and resolved using Coverity Static Analysis Security Testing (SAST) by Synopsys, Inc.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.03%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/stable/c/e65a0dc2e85efb28e182aca50218e8a056d0ce04 patch
https://git.kernel.org/stable/c/420ce1261907e5dbeda1e4daffd5b6c76f8188c0 patch
https://git.kernel.org/stable/c/b813e3fd102a959c5b208ed68afe27e0137a561b patch
https://git.kernel.org/stable/c/01fe2f885f7813f8aed5d3704b384a97b1116a9e patch
https://git.kernel.org/stable/c/b36efd2e3e22a329444b6b24fa48df6d20ae66e6 patch
https://git.kernel.org/stable/c/4038c57bf61631219b31f1bd6e92106ec7f084dc patch
https://git.kernel.org/stable/c/48a7a7c9571c3e62f17012dd7f2063e926179ddd patch
https://git.kernel.org/stable/c/adec57ff8e66aee632f3dd1f93787c13d112b7a1 patch

Frequently Asked Questions

What is the severity of CVE-2024-42090?
CVE-2024-42090 has been scored as a medium severity vulnerability.
How to fix CVE-2024-42090?
To fix CVE-2024-42090, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-42090 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-42090 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-42090?
CVE-2024-42090 affects Linux Linux, Linux Linux.
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