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Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix mismatched unlock for DMUB HW lock in HWSS fast path [Why] The evaluation for whether we need to use the DMUB HW lock isn't the same as whether we need to unlock which results in a hang when the fast path is used for ASIC without FAMS support. [How] Store a flag that indicates whether we should use the lock and use that same flag to specify whether unlocking is needed.

PUBLISHED Reserved 2026-05-01 | Published 2026-05-08 | Updated 2026-05-08 | Assigner Linux

Product status

Default status
unaffected

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 4e387ad67efb100b645630ffbce7716786f52283
affected

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before af3303970da5ce5bfe6dffdd07f38f42aad603e0
affected

Default status
affected

6.19.6 (semver)
unaffected

7.0 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/4e387ad67efb100b645630ffbce7716786f52283

git.kernel.org/...c/af3303970da5ce5bfe6dffdd07f38f42aad603e0

cve.org (CVE-2026-43305)

nvd.nist.gov (CVE-2026-43305)

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