CVE-2021-47534

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

24/05/2024

Last modified:

01/04/2025

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.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 4.10 MEDIUM
Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): High
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

4.10

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	5.12 (including)	5.15.7 (excluding)
cpe:2.3:o:linux:linux_kernel:5.16:rc1::::::
cpe:2.3:o:linux:linux_kernel:5.16:rc2::::::
cpe:2.3:o:linux:linux_kernel:5.16:rc3::::::

To consult the complete list of CPE names with products and versions, see this page

CVE-2021-47534

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools