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CVE-2024-42090 In the Linux kernel, the following vulnerability has been resolved: pinctrl: fix deadlock in create_pinctrl() when…
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 products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux 6.10 | earliest → < 6.10 | 6.10 |
| Linux 6.9 | earliest → < 6.9.8 | 6.9.8 |
| Linux 6.6 | earliest → < 6.6.37 | 6.6.37 |
| Linux 6.1 | earliest → < 6.1.97 | 6.1.97 |
| Linux 5.15 | earliest → < 5.15.162 | 5.15.162 |
| Linux 5.10 | earliest → < 5.10.221 | 5.10.221 |
| Linux 5.4 | earliest → < 5.4.279 | 5.4.279 |
| Linux 4.19 | earliest → < 4.19.317 | 4.19.317 |
| Linux | 3.10 | No fix stated |
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| Product | Affected versions | Fixed in |
|---|---|---|
| SIMATIC S7-1500 TM MFP - GNU/Linux subsystem 1.1 | earliest → < 1.1.1 | 1.1.1 |
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