wifi: cfg80211: reject auth/assoc to AP with our address (CVE-2023-53540) | HOL Guard CVE

High · CVSS 7.1CVE-2023-53540

wifi: cfg80211: reject auth/assoc to AP with our address

Answer in brief

CVE-2023-53540 records a High severity (CVSS 7.1) vulnerability in wifi: cfg80211: reject auth/assoc to AP with our address. 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 Oct 4, 2025Updated Aug 5, 2026Source checked Sep 19, 2026First seen by HOL Aug 4, 2026Material review Aug 5, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.1
Exploitation: Not marked as known exploited
Affected software: 3 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 7.1. 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.

Affected products and reported versions
Product	Affected versions	Fixed versions
cpe:2.3:o:linux:linux_kernel::::::::	Not reported	Not reported

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=19957bb399e2722719c0e20c9ae91cf8b6aaff04 <676a423410131d111a264d29aecbe6aadd57fb22 \|\| >=19957bb399e2722719c0e20c9ae91cf8b6aaff04 <07added2c6cd63de047bc786b39436322abb67c0 \|\| >=19957bb399e2722719c0e20c9ae91cf8b6aaff04 <5d4e04bf3a0f098bd9033de3a5291810fa14c7a6	676a423410131d111a264d29aecbe6aadd57fb22, 07added2c6cd63de047bc786b39436322abb67c0, 5d4e04bf3a0f098bd9033de3a5291810fa14c7a6
Linux/Linuxgeneric	2.6.32	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 676a423410131d111a264d29aecbe6aadd57fb22 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Oct 4, 2025
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 4, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: reject auth/assoc to AP with our address If the AP uses our own address as its MLD address or BSSID, then clearly something's wrong. Reject such connections so we don't try and fail later.

Quoted source text, attributed separately from HOL analysis.