drm/amdgpu/vcn4: Prevent OOB reads when parsing dec msg (CVE-2026-46199) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-46199

drm/amdgpu/vcn4: Prevent OOB reads when parsing dec msg

Answer in brief

CVE-2026-46199 records a Unknown severity vulnerability in drm/amdgpu/vcn4: Prevent OOB reads when parsing dec msg. 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.

Published May 28, 2026Updated Aug 5, 2026Source checked Sep 20, 2026First seen by HOL Aug 5, 2026Material review Aug 5, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

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.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=87cc7f9ebf7ce10f82250002d667ef3e93a79d44 <88411caee8f576d6b5abf6531232fcc0ce756dc5 \|\| >=87cc7f9ebf7ce10f82250002d667ef3e93a79d44 <c72a8b4dc6d598e3831ef3abd9c6527dfbf4810e \|\| >=87cc7f9ebf7ce10f82250002d667ef3e93a79d44 <7688143ca62edeecacb3ba0a2cea129dbd262a18 \|\| >=87cc7f9ebf7ce10f82250002d667ef3e93a79d44 <63b51e8a9d54317d31cc3856c1e12407070d5fc2 \|\| >=87cc7f9ebf7ce10f82250002d667ef3e93a79d44 <3c817a60b09eaab926e475088e750936efcc95ae \|\| >=87cc7f9ebf7ce10f82250002d667ef3e93a79d44 <0a78f2bac1424deb7c9d5e09c6b8e849d8e8b648	88411caee8f576d6b5abf6531232fcc0ce756dc5, c72a8b4dc6d598e3831ef3abd9c6527dfbf4810e, 7688143ca62edeecacb3ba0a2cea129dbd262a18, 63b51e8a9d54317d31cc3856c1e12407070d5fc2, 3c817a60b09eaab926e475088e750936efcc95ae, 0a78f2bac1424deb7c9d5e09c6b8e849d8e8b648
Linux/Linuxgeneric	5.13	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 88411caee8f576d6b5abf6531232fcc0ce756dc5 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
May 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 5, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn4: Prevent OOB reads when parsing dec msg Check bounds against the end of the BO whenever we access the msg.

Quoted source text, attributed separately from HOL analysis.