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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)

PUBLISHED Reserved 2025-12-16 | Published 2025-12-16 | Updated 2025-12-16 | Assigner Linux

Product status

Default status
unaffected

a9ed2f052c5c14e4be58c5ec8794dffc87588123 (git) before 2fa41445d8c98f2a65503c373796466496edc0e7
affected

a9ed2f052c5c14e4be58c5ec8794dffc87588123 (git) before ec18f6b2c743cc471b2539ddb5caed20a012e640
affected

a9ed2f052c5c14e4be58c5ec8794dffc87588123 (git) before 745bae76acdd71709773c129a69deca01036250b
affected

Default status
affected

6.12
affected

Any version before 6.12
unaffected

6.12.58 (semver)
unaffected

6.17.8 (semver)
unaffected

6.18 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/2fa41445d8c98f2a65503c373796466496edc0e7

git.kernel.org/...c/ec18f6b2c743cc471b2539ddb5caed20a012e640

git.kernel.org/...c/745bae76acdd71709773c129a69deca01036250b

cve.org (CVE-2025-68181)

nvd.nist.gov (CVE-2025-68181)

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Data based on CVE®. Copyright © 1999-2025, The MITRE Corporation. All rights reserved.