Riskcovery

CVE-2025-68181

drm/radeon: Remove calls to drm_put_dev()

State
Published
Severity
7.8 High
Published
Dec 16, 2025
Updated
Oct 15, 2026
Reserved
Dec 16, 2025

Read the record on cve.org

Description

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

drm/radeon: Remove calls to drm_put_dev()

Since the allocation of the drivers main structure was changed to devm_drm_dev_alloc() drm_put_dev()'ing to trigger it to be free'd should be done by devres.

However, drm_put_dev() is still in the probe error and device remove paths. When the driver fails to probe warnings like the following are shown because devres is trying to drm_put_dev() after the driver already did it.

[ 5.642230] radeon 0000:01:05.0: probe with driver radeon failed with error -22 [ 5.649605] ------------[ cut here ]------------ [ 5.649607] refcount_t: underflow; use-after-free. [ 5.649620] WARNING: CPU: 0 PID: 357 at lib/refcount.c:28 refcount_warn_saturate+0xbe/0x110

(cherry picked from commit 3eb8c0b4c091da0a623ade0d3ee7aa4a93df1ea4)

Scores

CVSSScoreVectorSource
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • a9ed2f052c5c14e4be58c5ec8794dffc87588123 to before 2fa41445d8c98f2a65503c373796466496edc0e7Affected
  • a9ed2f052c5c14e4be58c5ec8794dffc87588123 to before ec18f6b2c743cc471b2539ddb5caed20a012e640Affected
  • a9ed2f052c5c14e4be58c5ec8794dffc87588123 to before 745bae76acdd71709773c129a69deca01036250bAffected
LinuxLinux
  • 6.12Affected
  • before 6.12Not affected
  • 6.12.58 through 6.12.*Not affected
  • 6.17.8 through 6.17.*Not affected
  • 6.18 and laterNot affected

References

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