drm/amd/display: Check for tg ops in dce110_set_avmute (CVE-2026-74732) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-74732

drm/amd/display: Check for tg ops in dce110_set_avmute

Answer in brief

CVE-2026-74732 records a Unknown severity vulnerability in drm/amd/display: Check for tg ops in dce110_set_avmute. The current sources do not mark it as known exploited. The current feed maps 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 Aug 22, 2026Updated Aug 22, 2026Source checked Aug 22, 2026First seen by HOL Aug 22, 2026Material review Aug 22, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
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). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <853c2d31408bd45dcf92d0eb1f06eb439a56cf04 \|\| >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d089f32d34f821c8f0ef23d5fcd77bd43c1b3b92 \|\| >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5edbb409b0bc5001195f4b7cfca19122361211a1 \|\| >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3141e3d61469bba2624a91c5e2407f110b33b29e \|\| >=0 <6.12.104 \|\| >=0 <6.18.45 \|\| >=0 <7.1.9	853c2d31408bd45dcf92d0eb1f06eb439a56cf04, d089f32d34f821c8f0ef23d5fcd77bd43c1b3b92, 5edbb409b0bc5001195f4b7cfca19122361211a1, 3141e3d61469bba2624a91c5e2407f110b33b29e, 6.12.104, 6.18.45, 7.1.9

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux.
Review the reported fix. Update Linux/Linux to 853c2d31408bd45dcf92d0eb1f06eb439a56cf04 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 22, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 22, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 22, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Check for tg ops in dce110_set_avmute Some older DCE timing generators do not implement is_tg_enabled in their ops table. Calling it unconditionally when waiting for AV mute frames causes a NULL pointer dereference on Southern Islands dGPUs when turning the display off over HDMI. Check that tg and the required ops exist before waiting for frames. (cherry picked from commit 2686a0c0aaa07bec2e24131835cf27b5fd4935a5)

Quoted source text, attributed separately from HOL analysis.