High 7.8Published Jul 19, 2026

CVE-2026-63849drm/amdgpu/vcn: set no_user_fence for VCN v5.0.1 enc ring

Updated under an hour ago (2026-10-19 08:30 UTC)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn: set no_user_fence for VCN v5.0.1 enc ring VCN encoder and decoder rings do not support 64-bit user fence writes, reject CS submissions with user fences. (cherry picked from commit e16be95a2c3ee712b142cb27d2dca0b461181359)

CVSS: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Awaiting Analysis
Record last updated: Oct 16, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	346492f30ce3581bf5324c4ae417eab8537dc998 builds before 081ef0e46c9cdd26c0db0ef721470393d36b6655; 346492f30ce3581bf5324c4ae417eab8537dc998 builds before 5a4bffd67e94944ed3db26a959346cfb7fabaecd; 346492f30ce3581bf5324c4ae417eab8537dc998 builds before 8f4954722eab88e10c4ea0c0d3b1269c31421d3a	CNA record

References

https://git.kernel.org/stable/c/081ef0e46c9cdd26c0db0ef721470393d36b6655
https://git.kernel.org/stable/c/5a4bffd67e94944ed3db26a959346cfb7fabaecd
https://git.kernel.org/stable/c/8f4954722eab88e10c4ea0c0d3b1269c31421d3a

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.