Riskcovery

CVE-2022-50360

drm/msm/dp: fix aux-bus EP lifetime

State
Published
Severity
5.5 Medium
Published
Sep 17, 2025
Updated
May 11, 2026
Reserved
Sep 17, 2025

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

drm/msm/dp: fix aux-bus EP lifetime

Device-managed resources allocated post component bind must be tied to the lifetime of the aggregate DRM device or they will not necessarily be released when binding of the aggregate device is deferred.

This can lead resource leaks or failure to bind the aggregate device when binding is later retried and a second attempt to allocate the resources is made.

For the DP aux-bus, an attempt to populate the bus a second time will simply fail ("DP AUX EP device already populated").

Fix this by tying the lifetime of the EP device to the DRM device rather than DP controller platform device.

Patchwork: https://patchwork.freedesktop.org/patch/502672/

Scores

CVSSScoreVectorSource
3.15.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HCISA-ADP

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • c3bf8e21b38a89418f2e22173b229aaad2306815 to before 8768663188e4169333f66583e4d2432e65c421dfAffected
  • c3bf8e21b38a89418f2e22173b229aaad2306815 to before 2b57f726611e294dc4297dd48eb8c98ef1938e82Affected
LinuxLinux
  • 5.19Affected
  • before 5.19Not affected
  • 6.0.7 through 6.0.*Not affected
  • 6.1 and laterNot affected

References

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