CVE-2026-63856drm/amdgpu/vcn: set no_user_fence for VCN v2.0 enc/dec rings
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn: set no_user_fence for VCN v2.0 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 e2b5499fca55f1a32960a311bbb62e35891eaf73)
- 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
Linux Linux linux:linux (from the name) | from 1b61de45dfaff00b627e47349a019658e39268b9 before f264019be80de79f84f464846451445923bffea0; from 1b61de45dfaff00b627e47349a019658e39268b9 before 5e777bc4cbe928ac0fd95e368fee1540f2ce4db2; from 1b61de45dfaff00b627e47349a019658e39268b9 before ac06ce5cac9e711281585d09d00c6efcd9b86396; from 1b61de45dfaff00b627e47349a019658e39268b9 before c71aecae98e42dcf2baf462df50b3a2cf1a93fe4; from 1b61de45dfaff00b627e47349a019658e39268b9 before 8d80b293b41fcb5e9396db93e788b0f4ebcbafb7 | CNA record |
References
- https://git.kernel.org/stable/c/f264019be80de79f84f464846451445923bffea0
- https://git.kernel.org/stable/c/5e777bc4cbe928ac0fd95e368fee1540f2ce4db2
- https://git.kernel.org/stable/c/ac06ce5cac9e711281585d09d00c6efcd9b86396
- https://git.kernel.org/stable/c/c71aecae98e42dcf2baf462df50b3a2cf1a93fe4
- https://git.kernel.org/stable/c/8d80b293b41fcb5e9396db93e788b0f4ebcbafb7
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.