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().
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
c826a6e1064419f78855463cf29ce9e8b9d25bf4 to < cf55c6f1b62a89bf365c48bf731ccf69340e3a16affectedc826a6e1064419f78855463cf29ce9e8b9d25bf4 to < e9264ee59bd94970b80b7548f693bccf0d4628daaffectedc826a6e1064419f78855463cf29ce9e8b9d25bf4 to < a38f2724eb93a78ba250b01e0caf3468df4d3956affectedc826a6e1064419f78855463cf29ce9e8b9d25bf4 to < bac4c1a9af690b8635c6924872075c41d8763ed9affectedc826a6e1064419f78855463cf29ce9e8b9d25bf4 to < 6273dd3ffb54ec581855b82ae77331b66028249caffected
Linux Linux
Default version status: affected
4.5affected0 to < 4.5unaffected6.6.160 to ≤ 6.6.*unaffected6.12.114 to ≤ 6.12.*unaffected6.18.42 to ≤ 6.18.*unaffected7.1.6 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected
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 ↗