wifi: wcn36xx: fix OOB read from short trigger BA firmware response (CVE-2026-80635) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-80635

wifi: wcn36xx: fix OOB read from short trigger BA firmware response

Answer in brief

CVE-2026-80635 records a Unknown severity vulnerability in wifi: wcn36xx: fix OOB read from short trigger BA firmware response. 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 Aug 28, 2026Updated Aug 28, 2026Source checked Aug 28, 2026First seen by HOL Aug 28, 2026Material review Aug 28, 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	>=16be1ac55944412e8d132b1db26f994b368c5742 <04aba50212f9f274e1a726fb3873b5ce8da2d821 \|\| >=16be1ac55944412e8d132b1db26f994b368c5742 <c07aa0534d50361183833e3803204044cf1d0476 \|\| >=16be1ac55944412e8d132b1db26f994b368c5742 <d0b57bcd0dac6e2c9a3e474ec280e7db0b3edf35 \|\| >=16be1ac55944412e8d132b1db26f994b368c5742 <af8f0ea1f0a3a5fb5ed2b8fed3f1501d644597ee \|\| >=16be1ac55944412e8d132b1db26f994b368c5742 <d0cafe6ed8d1f6d0097eda31d85f5760d4f359c2 \|\| >=16be1ac55944412e8d132b1db26f994b368c5742 <b5e6f21923ca89d90256e7346301056f6502691e	04aba50212f9f274e1a726fb3873b5ce8da2d821, c07aa0534d50361183833e3803204044cf1d0476, d0b57bcd0dac6e2c9a3e474ec280e7db0b3edf35, af8f0ea1f0a3a5fb5ed2b8fed3f1501d644597ee, d0cafe6ed8d1f6d0097eda31d85f5760d4f359c2, b5e6f21923ca89d90256e7346301056f6502691e
Linux/Linuxgeneric	4.7	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 04aba50212f9f274e1a726fb3873b5ce8da2d821 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

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

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: wifi: wcn36xx: fix OOB read from short trigger BA firmware response The firmware response length is only checked against sizeof(*rsp) (20 bytes), but when candidate_cnt >= 1, a 22-byte candidate struct is read at buf + 20 without verifying the response contains it. This causes an out-of-bounds read of stale heap data, corrupting the BA session state. Add validation that the response includes the candidate data.

Quoted source text, attributed separately from HOL analysis.