CVE-2021-47534

Medium

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.

Package Linux Kernel
Published 2024-05-24
Last modified 2025-04-01
CVSS version 3.1
Patch available
Awaiting data

CVSS 3.1 score

4.1

out of 10
Medium
Attack Vector
Local
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High
Vector string
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

References

The following references provide additional information about CVE-2021-47534 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Frequently asked questions

  • What is CVE-2021-47534?

    CVE-2021-47534 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.1 out of 10 . CVE-2021-47534 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2021-47534?

    CVE-2021-47534 has a CVSS score of 4.1 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H .

  • Is there a patch available for CVE-2021-47534?

    No patch is currently available for CVE-2021-47534. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

  • Is CVE-2021-47534 actively exploited?

    No — CVE-2021-47534 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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