CVEvulnerability
CVE-2025-68732
- Status
- Deferred
- Published
- 2025-12-24
- Last modified
- 2026-10-13
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Description
In the Linux kernel, the following vulnerability has been resolved:
gpu: host1x: Fix race in syncpt alloc/free
Fix race condition between host1x_syncpt_alloc()
and host1x_syncpt_put() by using kref_put_mutex()
instead of kref_put() + manual mutex locking.
This ensures no thread can acquire the
syncpt_mutex after the refcount drops to zero
but before syncpt_release acquires it.
This prevents races where syncpoints could
be allocated while still being cleaned up
from a previous release.
Remove explicit mutex locking in syncpt_release
as kref_put_mutex() handles this atomically.
References
- https://git.kernel.org/stable/c/4aeaece518fa4436af93d1d8b786200d9656ff4b git.kernel.org
- https://git.kernel.org/stable/c/4e6e07ce0197aecfb6c4a62862acc93b3efedeb7 git.kernel.org
- https://git.kernel.org/stable/c/6245cce711e2cdb2cc75c0bb8632952e36f8c972 git.kernel.org
- https://git.kernel.org/stable/c/79197c6007f2afbfd7bcf5b9b80ccabf8483d774 git.kernel.org
- https://git.kernel.org/stable/c/c7d393267c497502fa737607f435f05dfe6e3d9b git.kernel.org
- https://git.kernel.org/stable/c/ca9388fba50dac2eb71c13702b7022a801bef90e git.kernel.org
- https://git.kernel.org/stable/c/d138f73ffb0c57ded473c577719e6e551b7b1f27 git.kernel.org