Answer in brief
CVE-2026-63849 records a Unknown severity vulnerability in drm/amdgpu/vcn: set no_user_fence for VCN v5.0.1 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 | >=346492f30ce3581bf5324c4ae417eab8537dc998 <081ef0e46c9cdd26c0db0ef721470393d36b6655 || >=346492f30ce3581bf5324c4ae417eab8537dc998 <5a4bffd67e94944ed3db26a959346cfb7fabaecd || >=346492f30ce3581bf5324c4ae417eab8537dc998 <8f4954722eab88e10c4ea0c0d3b1269c31421d3a | 081ef0e46c9cdd26c0db0ef721470393d36b6655, 5a4bffd67e94944ed3db26a959346cfb7fabaecd, 8f4954722eab88e10c4ea0c0d3b1269c31421d3a |
| Linux/Linuxgeneric | 6.14 | 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 v5.0.1 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 e16be95a2c3ee712b142cb27d2dca0b461181359)
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-63849 records a Unknown severity vulnerability in drm/amdgpu/vcn: set no_user_fence for VCN v5.0.1 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 | >=346492f30ce3581bf5324c4ae417eab8537dc998 <081ef0e46c9cdd26c0db0ef721470393d36b6655 || >=346492f30ce3581bf5324c4ae417eab8537dc998 <5a4bffd67e94944ed3db26a959346cfb7fabaecd || >=346492f30ce3581bf5324c4ae417eab8537dc998 <8f4954722eab88e10c4ea0c0d3b1269c31421d3a | 081ef0e46c9cdd26c0db0ef721470393d36b6655, 5a4bffd67e94944ed3db26a959346cfb7fabaecd, 8f4954722eab88e10c4ea0c0d3b1269c31421d3a |
| Linux/Linuxgeneric | 6.14 | 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 v5.0.1 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 e16be95a2c3ee712b142cb27d2dca0b461181359)
Quoted source text, attributed separately from HOL analysis.