CVE-2026-63855
drm/amdgpu/vcn: set no_user_fence for VCN v2.5 enc/dec rings
HIGH 7.8
At a glance
- Source
- NVD
- EPSS
- EPSS 0.18 % · percentile 7 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Analyzed
Description
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn: set no_user_fence for VCN v2.5 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 efc9dd5590894109bce9a0bfe1fa5592dd6b20b1)
Weaknesses (CWE)
- CWE-20 — Improper Input Validation
References
- https://git.kernel.org/stable/c/2c6fb056567efb49f8674108b86088a1cfaa86d0
- https://git.kernel.org/stable/c/8f0ea4524dc71c6c9ec97f2711f46e12f624140f
- https://git.kernel.org/stable/c/602d4c5872b25ddd4d82fb2025efb9a05b187bb3
- https://git.kernel.org/stable/c/5a3c6f76cab164a5d803084908d7050f649ab7f9
- https://git.kernel.org/stable/c/4f317863a3ab212a027d8c8c3cc3af4e3fb95704
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | Linux |
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
European references
- ENISA EUVD · EUVD-2026-45539
- GCVE · GCVE-0-2026-63855
CERT-FR advisories
- CERTFR-2026-AVI-1252 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1229 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1162 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1091 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1066 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1064 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0954 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0926 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.4 < 6.6.141cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.7 < 6.12.91cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.13 < 6.18.33cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.19 < 7.0.10cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 28c17d72072b7ce5cc13a527dcbfc045cc995e7d < 2c6fb056567efb49f8674108b86088a1cfaa86d0 ; affected 28c17d72072b7ce5cc13a527dcbfc045cc995e7d < 8f0ea4524dc71c6c9ec97f2711f46e12f624140f ; affected 28c17d72072b7ce5cc13a527dcbfc045cc995e7d < 602d4c5872b25ddd4d82fb2025efb9a05b187bb3 ; affected 28c17d72072b7ce5cc13a527dcbfc045cc995e7d < 5a3c6f76cab164a5d803084908d7050f649ab7f9 ; affected 28c17d72072b7ce5cc13a527dcbfc045cc995e7d < 4f317863a3ab212a027d8c8c3cc3af4e3fb95704 |
| Linux · Linux | affected 5.4 ; unaffected 0 < 5.4 ; unaffected 6.6.141 ≤ 6.6.* ; unaffected 6.12.91 ≤ 6.12.* ; unaffected 6.18.33 ≤ 6.18.* ; unaffected 7.0.10 ≤ 7.0.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |