Riskcovery

CVE-2026-68233

drm/vc4: Shut down BO cache timer before teardown

State
Published
Severity
Not scored
Published
Aug 10, 2026
Updated
Oct 30, 2026
Reserved
Jul 30, 2026

Read the record on cve.org

Description

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

drm/vc4: Shut down BO cache timer before teardown

The BO cache timer callback schedules time_work, and time_work can rearm the timer through vc4_bo_cache_free_old().

vc4_bo_cache_destroy() deletes the timer and then cancels the work, which does not break that cycle: the work being cancelled can rearm the timer, and the timer then queues work again after teardown.

Use timer_shutdown_sync() instead, so the timer cannot be rearmed and the cycle ends with cancel_work_sync().

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • c826a6e1064419f78855463cf29ce9e8b9d25bf4 to before 948cd4876dafbfab826384516df19fe813d9f1d1Affected
  • c826a6e1064419f78855463cf29ce9e8b9d25bf4 to before cf55c6f1b62a89bf365c48bf731ccf69340e3a16Affected
  • c826a6e1064419f78855463cf29ce9e8b9d25bf4 to before e9264ee59bd94970b80b7548f693bccf0d4628daAffected
  • c826a6e1064419f78855463cf29ce9e8b9d25bf4 to before a38f2724eb93a78ba250b01e0caf3468df4d3956Affected
  • c826a6e1064419f78855463cf29ce9e8b9d25bf4 to before bac4c1a9af690b8635c6924872075c41d8763ed9Affected
  • c826a6e1064419f78855463cf29ce9e8b9d25bf4 to before 6273dd3ffb54ec581855b82ae77331b66028249cAffected
LinuxLinux
  • 4.5Affected
  • before 4.5Not affected
  • 6.1.191 through 6.1.*Not affected
  • 6.6.160 through 6.6.*Not affected
  • 6.12.114 through 6.12.*Not affected
  • 6.18.42 through 6.18.*Not affected
  • 7.1.6 through 7.1.*Not affected
  • 7.2 and laterNot affected

References

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