CVE-2026-63855
highIn the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn: set no_user_fence for VCN v2.5 enc/dec rings VCN encoder and decoder ring…
Vendor / product: Linux — linux kernel
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn: set no_user_fence 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)
CVSS
7.8
7.8 (CVSS v3.1)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
Timeline (UTC)
Published: 2026-07-19 15:16
Modified: 2026-10-30 13:19
NVD status: Modified
Last synced 1 day ago
Verified against the source API 2026-10-30 13:38 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
linux / linux_kernel ≥5.4 <6.6.141, ≥6.7 <6.12.91, ≥6.13 <6.18.33, ≥6.19 <7.0.10, 7.1
Weakness classification (CWE)
NVD-CWE-noinfo CWE-20
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Patch / mitigation: https://git.kernel.org/stable/c/2c6fb056567efb49f8674108b86088a1cfaa86d0
Patch / mitigation: https://git.kernel.org/stable/c/4f317863a3ab212a027d8c8c3cc3af4e3fb95704
Patch / mitigation: https://git.kernel.org/stable/c/5a3c6f76cab164a5d803084908d7050f649ab7f9
Patch / mitigation: https://git.kernel.org/stable/c/602d4c5872b25ddd4d82fb2025efb9a05b187bb3
Patch / mitigation: https://git.kernel.org/stable/c/8f0ea4524dc71c6c9ec97f2711f46e12f624140f
References
- https://git.kernel.org/stable/c/2c6fb056567efb49f8674108b86088a1cfaa86d0 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/4f317863a3ab212a027d8c8c3cc3af4e3fb95704 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/5a3c6f76cab164a5d803084908d7050f649ab7f9 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/602d4c5872b25ddd4d82fb2025efb9a05b187bb3 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/8156e258025f2a22fcf7486c96848ac3cd3541dd 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/8f0ea4524dc71c6c9ec97f2711f46e12f624140f 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Data sources
NVD CVE API 2.0 — fetched 2026-10-30 13:38 UTC · record ↗