Answer in brief
CVE-2026-63853 records a Unknown severity vulnerability in drm/amdgpu/vcn: set no_user_fence for VCN v4.0 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 | >=8da1170a16e4d4b49fa07d1f75ad480847ff7eca <1286b6872de0aee1feeeaa6dbac86369806de9a5 || >=8da1170a16e4d4b49fa07d1f75ad480847ff7eca <6bdd2ed6458d35c368fbe9550a4d7f342abd3a92 || >=8da1170a16e4d4b49fa07d1f75ad480847ff7eca <51f694221047c84fa185be98210eb2c354ffb8c6 | 1286b6872de0aee1feeeaa6dbac86369806de9a5, 6bdd2ed6458d35c368fbe9550a4d7f342abd3a92, 51f694221047c84fa185be98210eb2c354ffb8c6 |
| Linux/Linuxgeneric | 5.19 | 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 v4.0 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 fd852c048b46f9825e904a4f3f4538fe9d8827d9)
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-63853 records a Unknown severity vulnerability in drm/amdgpu/vcn: set no_user_fence for VCN v4.0 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 | >=8da1170a16e4d4b49fa07d1f75ad480847ff7eca <1286b6872de0aee1feeeaa6dbac86369806de9a5 || >=8da1170a16e4d4b49fa07d1f75ad480847ff7eca <6bdd2ed6458d35c368fbe9550a4d7f342abd3a92 || >=8da1170a16e4d4b49fa07d1f75ad480847ff7eca <51f694221047c84fa185be98210eb2c354ffb8c6 | 1286b6872de0aee1feeeaa6dbac86369806de9a5, 6bdd2ed6458d35c368fbe9550a4d7f342abd3a92, 51f694221047c84fa185be98210eb2c354ffb8c6 |
| Linux/Linuxgeneric | 5.19 | 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 v4.0 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 fd852c048b46f9825e904a4f3f4538fe9d8827d9)
Quoted source text, attributed separately from HOL analysis.