CVE-2026-63855

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Source

https://cve.org/CVERecord?id=CVE-2026-63855

Import Source

JSON Data

https://api.test.osv.dev/v1/vulns/CVE-2026-63855

Downstream

Published

2026-07-19T14:04:45.096Z

Modified

2026-07-22T03:32:03.127200819Z

Severity

7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator

Summary

drm/amdgpu/vcn: set no_user_fence for VCN v2.5 enc/dec rings

Details

In the Linux kernel, the following vulnerability has been resolved:

drm/amdgpu/vcn: set nouserfence for VCN v2.5 enc/dec rings

VCN encoder and decoder rings do not support 64-bit user fence writes, reject CS submissions with user fences.

(cherry picked from commit efc9dd5590894109bce9a0bfe1fa5592dd6b20b1)

Database specific

{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63855.json"
}

References

Affected packages

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

28c17d72072b7ce5cc13a527dcbfc045cc995e7d

Fixed

2c6fb056567efb49f8674108b86088a1cfaa86d0

Fixed

8f0ea4524dc71c6c9ec97f2711f46e12f624140f

Fixed

602d4c5872b25ddd4d82fb2025efb9a05b187bb3

Fixed

5a3c6f76cab164a5d803084908d7050f649ab7f9

Fixed

4f317863a3ab212a027d8c8c3cc3af4e3fb95704

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-63855.json"

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-63855.json"