CVE-2024-42090

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

MEDIUM

5.5

CVSS Score

Published: July 29, 2024 at 04:26 PM UTC

Updated: October 15, 2026 at 01:18 AM UTC

2 products affected across 2 vendorsLinux KernelSIMATIC S7-1500 TM MFP

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

3.10 ≤ v < 4.19.3174.20 ≤ v < 5.4.2795.11 ≤ v < 5.15.1625.16 ≤ v < 6.1.975.5 ≤ v < 5.10.2216.2 ≤ v < 6.6.376.7 ≤ v < 6.9.83.1042fed7ba44e4e8c1fb27b28ad14490cb1daff3c7

Vendor states this is fixed in 01fe2f885f7813f8aed5d3704b384a97b1116a9e (fixed)

Vendor states this is fixed in 4038c57bf61631219b31f1bd6e92106ec7f084dc (fixed)

Vendor states this is fixed in 420ce1261907e5dbeda1e4daffd5b6c76f8188c0 (fixed)

Vendor states this is fixed in 48a7a7c9571c3e62f17012dd7f2063e926179ddd (fixed)

Vendor states this is fixed in adec57ff8e66aee632f3dd1f93787c13d112b7a1 (fixed)

Vendor states this is fixed in b36efd2e3e22a329444b6b24fa48df6d20ae66e6 (fixed)

Vendor states this is fixed in b813e3fd102a959c5b208ed68afe27e0137a561b (fixed)

Vendor states this is fixed in e65a0dc2e85efb28e182aca50218e8a056d0ce04 (fixed)

Vendor states this is fixed in 3.10 (unaffected)

Vendor states this is fixed in 4.19.317 (unaffected)

Vendor states this is fixed in 5.10.221 (unaffected)

Vendor states this is fixed in 5.15.162 (unaffected)