CVE-2026-63851
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn: set no_user_fence for VCN v4.0.5 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 084d94ac93707bdda07efb5cee786f632de4219b)
Affected versions
Linux kernel versions
6.7
and later are affected. Fixed in
6.12.91,
6.18.33,
7.0.10,
7.1
and their respective stable series.
References
4 totalFrequently asked questions
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What is CVE-2026-63851?
CVE-2026-63851 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.7 onward and has been patched in 6.12.91, 6.18.33, 7.0.10 and others. CVE-2026-63851 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-2026-63851?
Yes — CVE-2026-63851 has been patched. Fixed versions include 6.12.91, 6.18.33, 7.0.10 and others. If you are running Linux kernel 6.7 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-63851 actively exploited?
No — CVE-2026-63851 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.