CVE-2022-50492: drm/msm: fix use-after-free on probe deferral

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-10-04 · updated 2026-08-04
Weakness: CWE-416

Description

In the Linux kernel, the following vulnerability has been resolved: drm/msm: fix use-after-free on probe deferral The bridge counter was never reset when tearing down the DRM device so that stale pointers to deallocated structures would be accessed on the next tear down (e.g. after a second late bind deferral). Given enough bridges and a few probe deferrals this could currently also lead to data beyond the bridge array being corrupted. Patchwork: https://patchwork.freedesktop.org/patch/502665/

Affected products

Linux kernel: from 3.12 before 6.0.7; 6.1-rc1, 6.1-rc2 — fixed in 6.0.7

How to fix

Upgrade to a fixed version: Linux kernel 6.0.7. Check the vendor advisory for mitigations.

References

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