CVE-2026-63856 (GCVE-0-2026-63856)
Vulnerability from cvelistv5 – Published: 2026-07-19 14:04 – Updated: 2026-10-19 20:07
VLAI
EPSS
VEX
Title
drm/amdgpu/vcn: set no_user_fence for VCN v2.0 enc/dec rings
Summary
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)
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 15:32 UTC
CWE
- CWE-20 - Improper Input Validation
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
1b61de45dfaff00b627e47349a019658e39268b9 , < f264019be80de79f84f464846451445923bffea0
(git)
Affected: 1b61de45dfaff00b627e47349a019658e39268b9 , < 5e777bc4cbe928ac0fd95e368fee1540f2ce4db2 (git) Affected: 1b61de45dfaff00b627e47349a019658e39268b9 , < ac06ce5cac9e711281585d09d00c6efcd9b86396 (git) Affected: 1b61de45dfaff00b627e47349a019658e39268b9 , < c71aecae98e42dcf2baf462df50b3a2cf1a93fe4 (git) Affected: 1b61de45dfaff00b627e47349a019658e39268b9 , < 8d80b293b41fcb5e9396db93e788b0f4ebcbafb7 (git) |
guessed | |
| Linux | Linux |
Affected:
5.3
Unaffected: 0 , < 5.3 (semver) Unaffected: 6.6.141 , ≤ 6.6.* (semver) Unaffected: 6.12.91 , ≤ 6.12.* (semver) Unaffected: 6.18.33 , ≤ 6.18.* (semver) Unaffected: 7.0.10 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix) |
guessed |
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"source": "Red Hat CSAF VEX",
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"title": "kernel: drm/amdgpu/vcn: set no_user_fence for VCN v2.0 enc/dec rings",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-63856.json",
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| Author | Source | Type | Date | Other |
|---|
Nomenclature
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