Riskcovery

CVE-2022-50492

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

State
Published
Severity
7.8 High
Published
Oct 4, 2025
Updated
Aug 5, 2026
Reserved
Oct 4, 2025

Read the record on cve.org

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/

Scores

CVSSScoreVectorSource
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • a3376e3ec81c5dd0622cbc187db76d2824d31c1c to before 0a30a47741b6df1f9555a0fac6aebb7e8c363badAffected
  • a3376e3ec81c5dd0622cbc187db76d2824d31c1c to before 6808abdb33bf90330e70a687d29f038507e06ebbAffected
LinuxLinux
  • 3.12Affected
  • before 3.12Not affected
  • 6.0.7 through 6.0.*Not affected
  • 6.1 and laterNot affected

References

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