media: cec: extron-da-hd-4k-plus: add sanity check (CVE-2026-89898) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-89898

media: cec: extron-da-hd-4k-plus: add sanity check

Answer in brief

CVE-2026-89898 records a Unknown severity vulnerability in media: cec: extron-da-hd-4k-plus: add sanity check. 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 16, 2026Updated Sep 16, 2026Source checked Sep 16, 2026First seen by HOL Sep 16, 2026Material review Sep 16, 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	>=056f2821b631df2b94d3b017fd1e1eef918ed98d <00c13b4ab481a09d915d099815cff1b10926ddd9 \|\| >=056f2821b631df2b94d3b017fd1e1eef918ed98d <673611cc2ab9769929644ce879f7ea34932a3011 \|\| >=056f2821b631df2b94d3b017fd1e1eef918ed98d <7ad2fec276946a0dedfa54eb26fc38c4fc6a6034 \|\| >=056f2821b631df2b94d3b017fd1e1eef918ed98d <abac9820b26b5cfcb01eb79efe2abdd0ac7e07c3	00c13b4ab481a09d915d099815cff1b10926ddd9, 673611cc2ab9769929644ce879f7ea34932a3011, 7ad2fec276946a0dedfa54eb26fc38c4fc6a6034, abac9820b26b5cfcb01eb79efe2abdd0ac7e07c3
Linux/Linuxgeneric	6.12	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 00c13b4ab481a09d915d099815cff1b10926ddd9 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 16, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: media: cec: extron-da-hd-4k-plus: add sanity check Add check to prevent overflowing msg.msg[] in case the incoming data is malformed.

Quoted source text, attributed separately from HOL analysis.