High 7.8Published Jul 19, 2026

CVE-2026-63853drm/amdgpu/vcn: set no_user_fence for VCN v4.0 enc ring

Updated under an hour ago (Oct 28, 2026, 6:20 PM ET)

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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 v4.0 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 fd852c048b46f9825e904a4f3f4538fe9d8827d9)

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): CWE-20
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: Analyzed
Record last updated: Oct 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 8da1170a16e4d4b49fa07d1f75ad480847ff7eca before 525cc9df654365c147ae61e5562cf599ea2257f7; from 8da1170a16e4d4b49fa07d1f75ad480847ff7eca before d8df8918677136b018d71d0b94a1f6b816715946; from 8da1170a16e4d4b49fa07d1f75ad480847ff7eca before 1286b6872de0aee1feeeaa6dbac86369806de9a5; 8da1170a16e4d4b49fa07d1f75ad480847ff7eca builds before 6bdd2ed6458d35c368fbe9550a4d7f342abd3a92; from 8da1170a16e4d4b49fa07d1f75ad480847ff7eca before 51f694221047c84fa185be98210eb2c354ffb8c6	CNA record
linux linux_kernel linux:linux_kernel	from 5.19 before 6.6.160; from 6.7 before 6.12.114; from 6.13 before 6.18.33; from 6.19 before 7.0.10; 7.1	NVD

References

References

https://git.kernel.org/stable/c/525cc9df654365c147ae61e5562cf599ea2257f7	patch
https://git.kernel.org/stable/c/d8df8918677136b018d71d0b94a1f6b816715946	patch
https://git.kernel.org/stable/c/1286b6872de0aee1feeeaa6dbac86369806de9a5	patch
https://git.kernel.org/stable/c/6bdd2ed6458d35c368fbe9550a4d7f342abd3a92	patch
https://git.kernel.org/stable/c/51f694221047c84fa185be98210eb2c354ffb8c6	patch

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.