Answer in brief
CVE-2026-63850 records a Unknown severity vulnerability in drm/amdgpu/vcn: set no_user_fence for VCN v5.0.0 enc ring. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=b6d1a06320519ac3bfda6ce81067a1bc409b9cff <9f5a1459ecc3195282be617639d710b54779c9dc || >=b6d1a06320519ac3bfda6ce81067a1bc409b9cff <139a8a52ef4349c62129703b3a3e3a6ae4d634eb || >=b6d1a06320519ac3bfda6ce81067a1bc409b9cff <2c350f3cd94be847ac216e1358ec7001eaaf0934 || >=b6d1a06320519ac3bfda6ce81067a1bc409b9cff <8cae0ce77de492d7c31c1532a2e80c0c6e7e58cb | 9f5a1459ecc3195282be617639d710b54779c9dc, 139a8a52ef4349c62129703b3a3e3a6ae4d634eb, 2c350f3cd94be847ac216e1358ec7001eaaf0934, 8cae0ce77de492d7c31c1532a2e80c0c6e7e58cb |
| Linux/Linuxgeneric | 6.9 | Not reported |
Published upstream
Jul 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn: set no_user_fence for VCN v5.0.0 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 49b1fbbb5a071197ee71e2d70959b1cb29bdc317)
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-63850 records a Unknown severity vulnerability in drm/amdgpu/vcn: set no_user_fence for VCN v5.0.0 enc ring. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=b6d1a06320519ac3bfda6ce81067a1bc409b9cff <9f5a1459ecc3195282be617639d710b54779c9dc || >=b6d1a06320519ac3bfda6ce81067a1bc409b9cff <139a8a52ef4349c62129703b3a3e3a6ae4d634eb || >=b6d1a06320519ac3bfda6ce81067a1bc409b9cff <2c350f3cd94be847ac216e1358ec7001eaaf0934 || >=b6d1a06320519ac3bfda6ce81067a1bc409b9cff <8cae0ce77de492d7c31c1532a2e80c0c6e7e58cb | 9f5a1459ecc3195282be617639d710b54779c9dc, 139a8a52ef4349c62129703b3a3e3a6ae4d634eb, 2c350f3cd94be847ac216e1358ec7001eaaf0934, 8cae0ce77de492d7c31c1532a2e80c0c6e7e58cb |
| Linux/Linuxgeneric | 6.9 | Not reported |
Published upstream
Jul 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn: set no_user_fence for VCN v5.0.0 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 49b1fbbb5a071197ee71e2d70959b1cb29bdc317)
Quoted source text, attributed separately from HOL analysis.