CVE-2026-63854
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn: set no_user_fence for VCN v3.0 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 663bed3c7b8b9a7624b0d95d300ddae034ad0614)
Affected versions
Linux kernel versions
5.9
and later are affected. Fixed in
6.6.141,
6.12.91,
6.18.33,
7.0.10,
7.1
and their respective stable series.
References
5 totalFrequently asked questions
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What is CVE-2026-63854?
CVE-2026-63854 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.9 onward and has been patched in 6.6.141, 6.12.91, 6.18.33 and others. CVE-2026-63854 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-63854?
Yes — CVE-2026-63854 has been patched. Fixed versions include 6.6.141, 6.12.91, 6.18.33 and others. If you are running Linux kernel 5.9 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-63854 actively exploited?
No — CVE-2026-63854 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.