High 7.8Published Jul 19, 2026

CVE-2026-63850drm/amdgpu/vcn: set no_user_fence for VCN v5.0.0 enc ring

Updated under an hour ago (Oct 28, 2026, 6:10 AM ET)

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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 v5.0.0 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 49b1fbbb5a071197ee71e2d70959b1cb29bdc317)

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 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from b6d1a06320519ac3bfda6ce81067a1bc409b9cff before 9f5a1459ecc3195282be617639d710b54779c9dc; from b6d1a06320519ac3bfda6ce81067a1bc409b9cff before 139a8a52ef4349c62129703b3a3e3a6ae4d634eb; from b6d1a06320519ac3bfda6ce81067a1bc409b9cff before 2c350f3cd94be847ac216e1358ec7001eaaf0934; from b6d1a06320519ac3bfda6ce81067a1bc409b9cff before 8cae0ce77de492d7c31c1532a2e80c0c6e7e58cb	CNA record
linux linux_kernel linux:linux_kernel	from 6.9 before 6.12.91; 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/9f5a1459ecc3195282be617639d710b54779c9dc	patch
https://git.kernel.org/stable/c/139a8a52ef4349c62129703b3a3e3a6ae4d634eb	patch
https://git.kernel.org/stable/c/2c350f3cd94be847ac216e1358ec7001eaaf0934	patch
https://git.kernel.org/stable/c/8cae0ce77de492d7c31c1532a2e80c0c6e7e58cb	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.