CVE-2025-71296 PUBLISHED

drm/tests: shmem: Hold reservation lock around purge

Assigner: Linux
Reserved: 06.05.2026 Published: 08.05.2026 Updated: 08.05.2026

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

drm/tests: shmem: Hold reservation lock around purge

Acquire and release the GEM object's reservation lock around calls to the object's purge operation. The tests use drm_gem_shmem_purge_locked(), which led to errors such as show below.

[ 58.709128] WARNING: CPU: 1 PID: 1354 at drivers/gpu/drm/drm_gem_shmem_helper.c:515 drm_gem_shmem_purge_locked+0x51c/0x740

Only export the new helper drm_gem_shmem_purge() for Kunit tests. This is not an interface for regular drivers.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 954907f7147dc43e0d1cd4d430c21d143d5fdf55 to cdf8bbbd9017adcfb91ad9a902198d4b507719a9 (excl.)
  • affected from 954907f7147dc43e0d1cd4d430c21d143d5fdf55 to 8baeee2c1c0cdb3a8eac3b8f38156cce6ee1a69f (excl.)
  • affected from 954907f7147dc43e0d1cd4d430c21d143d5fdf55 to 3f41307d589c2f25d556d47b165df808124cd0c4 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 6.16 is affected
  • unaffected from 0 to 6.16 (excl.)
  • unaffected from 6.18.16 to 6.18.* (incl.)
  • unaffected from 6.19.6 to 6.19.* (incl.)
  • unaffected from 7.0 to * (incl.)

References