media: v4l2-ctrls: validate AV1 tile counts

Answer in brief

CVE-2026-97575 records a High severity (CVSS 7.8) vulnerability in media: v4l2-ctrls: validate AV1 tile counts. 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 Sep 25, 2026Updated Sep 25, 2026Source checked Sep 25, 2026First seen by HOL Sep 25, 2026Material review Sep 25, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.8
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 7.8. 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	>=9de30f579980b498606a9c2440b73ae3b670771b <85df9fc79b07f1cc7c953f930ae7e675d0c1e820 \|\| >=9de30f579980b498606a9c2440b73ae3b670771b <c8891da0186fe4c04bccbbd7d84b01a3c941ac7a \|\| >=9de30f579980b498606a9c2440b73ae3b670771b <c4c88b5ba85685043d171e0e9c9d00a8cf6a89e8 \|\| >=9de30f579980b498606a9c2440b73ae3b670771b <439058ced617fbb3febc017b9e93bb7387f309e0	85df9fc79b07f1cc7c953f930ae7e675d0c1e820, c8891da0186fe4c04bccbbd7d84b01a3c941ac7a, c4c88b5ba85685043d171e0e9c9d00a8cf6a89e8, 439058ced617fbb3febc017b9e93bb7387f309e0
Linux/Linuxgeneric	6.5	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 85df9fc79b07f1cc7c953f930ae7e675d0c1e820 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 25, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: media: v4l2-ctrls: validate AV1 tile counts The stateless AV1 decoders use tile_info.tile_cols and tile_rows as loop bounds and as indices into the mi_*_starts[] and *_in_sbs_minus_1[] arrays, as the divisor for context_update_tile_id, and their product bounds the per-tile descriptor buffers, but std_validate_compound() does not bound these u8 fields. Reject a V4L2_CTRL_TYPE_AV1_FRAME whose tile_cols or tile_rows exceeds V4L2_AV1_MAX_TILE_COLS / _ROWS, or whose product exceeds V4L2_AV1_MAX_TILE_COUNT. A zero tile count is left to the consuming driver so the zero-initialised control that existing userspace submits is still accepted.

Quoted source text, attributed separately from HOL analysis.