wifi: cfg80211: reject duplicate wiphy cipher suite entries (CVE-2026-97518) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-97518

wifi: cfg80211: reject duplicate wiphy cipher suite entries

Answer in brief

CVE-2026-97518 records a Unknown severity vulnerability in wifi: cfg80211: reject duplicate wiphy cipher suite entries. 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 Sep 24, 2026Updated Sep 24, 2026Source checked Sep 25, 2026First seen by HOL Sep 25, 2026Material review Sep 24, 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 <1305f8b925fe92edf5fec183588dfc7db719180b \|\| >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <4cbb2360f4d8c29e67bc7a8bf6ba0ae096583923 \|\| >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <7187d145d9042b037e4f10538f70cf95e380219f \|\| >=0 <6.12.111 \|\| >=0 <6.18.53	1305f8b925fe92edf5fec183588dfc7db719180b, 4cbb2360f4d8c29e67bc7a8bf6ba0ae096583923, 7187d145d9042b037e4f10538f70cf95e380219f, 6.12.111, 6.18.53

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux.
Review the reported fix. Update Linux/Linux to 1305f8b925fe92edf5fec183588dfc7db719180b if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 24, 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: wifi: cfg80211: reject duplicate wiphy cipher suite entries Duplicate entries in wiphy->cipher_suites do not describe any additional capability, but cfg80211 currently accepts them and leaves individual consumers to deal with them. One such consumer is the WEXT compatibility code, which appends a WEP key length for each WEP cipher entry it sees. Repeated WEP entries can therefore overflow the fixed iw_range::encoding_size array returned by SIOCGIWRANGE. Reject duplicate cipher suite entries in wiphy_register() instead. This keeps the cipher suite invariant in one place and makes malformed wiphy descriptions fail early with -EINVAL, rather than relying on a single cfg80211 user to handle duplicates correctly.

Quoted source text, attributed separately from HOL analysis.