CVE-2021-47534 - OpenCVE

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.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

No data.

No data.

No data.

References

Link	Providers
https://git.kernel.org/stable/c/049cfff8d53a30cae3349ff71a4c01b7d9981bc2
https://git.kernel.org/stable/c/53f9601e908d42481addd67cdb01a9288c611124
https://lore.kernel.org/linux-cve-announce/2024052437-CVE-2021-47534-ef5f@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2021-47534
https://www.cve.org/CVERecord?id=CVE-2021-47534

History

No history.

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-05-24T15:09:43.344Z

Updated: 2024-08-04T05:39:59.777Z

Reserved: 2024-05-24T15:02:54.826Z

Link: CVE-2021-47534

Vulnrichment

Updated: 2024-08-04T05:39:59.777Z

NVD

Status : Awaiting Analysis

Published: 2024-05-24T15:15:16.940

Modified: 2024-05-24T18:09:20.027

Link: CVE-2021-47534

Redhat

Severity : Low

Publid Date: 2024-05-24T00:00:00Z

Links: CVE-2021-47534 - Bugzilla

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