CVEvulnerability

CVE-2021-47534

4.1 MEDIUM Published 2024-05-24 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2024-05-24
Last modified
2026-06-17
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
4.1 MEDIUM — CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

Description

In the Linux kernel, the following vulnerability has been resolved: drm/vc4: kms: Add missing drm_crtc_commit_put Commit 9ec03d7f1ed3 ("drm/vc4: kms: Wait on previous FIFO users before a commit") introduced a global state for the HVS, with each FIFO storing the current CRTC commit so that we can properly synchronize commits. However, the refcounting was off and we thus ended up leaking the drm_crtc_commit structure every commit. Add a drm_crtc_commit_put to prevent the leakage.

Affected configurations

• linux linux kernel (>= 5.12 < 5.15.7) • linux linux kernel 5.16

References