Description (CNA)
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().
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected c826a6e1064419f78855463cf29ce9e8b9d25bf4 before cf55c6f1b62a89bf365c48bf731ccf69340e3a16; affected c826a6e1064419f78855463cf29ce9e8b9d25bf4 before e9264ee59bd94970b80b7548f693bccf0d4628da; affected c826a6e1064419f78855463cf29ce9e8b9d25bf4 before a38f2724eb93a78ba250b01e0caf3468df4d3956; affected c826a6e1064419f78855463cf29ce9e8b9d25bf4 before bac4c1a9af690b8635c6924872075c41d8763ed9; affected c826a6e1064419f78855463cf29ce9e8b9d25bf4 before 6273dd3ffb54ec581855b82ae77331b66028249c |
| Linux / Linux | affected 4.5; unaffected 0 before 4.5; unaffected 6.6.160 through 6.6.*; unaffected 6.12.114 through 6.12.*; unaffected 6.18.42 through 6.18.*; unaffected 7.1.6 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/cf55c6f1b62a89bf365c48bf731ccf69340e3a16
- https://git.kernel.org/stable/c/e9264ee59bd94970b80b7548f693bccf0d4628da
- https://git.kernel.org/stable/c/a38f2724eb93a78ba250b01e0caf3468df4d3956
- https://git.kernel.org/stable/c/bac4c1a9af690b8635c6924872075c41d8763ed9
- https://git.kernel.org/stable/c/6273dd3ffb54ec581855b82ae77331b66028249c