VulnerabilityPublished 24 Sep 2026Updated 30 Oct 2026

CVE-2026-97518: Linux kernel · wifi: cfg80211: reject duplicate wiphy cipher suite entries

Source GCVE Database

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Authoritative record:CVE-2026-97518· Medium

Not known to be exploited · fixed in d12e92e72db914e1ea777c6f246f6be75985438e : update Linux kernel when convenient.

Data as of 30 Oct 2026, 17:48 UTC

Severity

Medium

Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD

Thin evidence

One scorer or none

Patch: Available – fixed in d12e92e72db914e1ea777c6f246f6be75985438e, 7187d145d9042b037e4f10538f70cf95e380219f, 1305f8b925fe92edf5fec183588dfc7db719180b +2

Exploitation evidence

Disclosed: evidence found.
CVE published 24 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

ghsa-q434-f3vh-rmc4

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 2ab658f9ce218ae93b3d2db2b3fe68bfefb81196, < d12e92e72db914e1ea777c6f246f6be75985438e	Fixed in d12e92e72db914e1ea777c6f246f6be75985438e
LinuxLinux	Affected ≥ 2ab658f9ce218ae93b3d2db2b3fe68bfefb81196, < 7187d145d9042b037e4f10538f70cf95e380219f	Fixed in 7187d145d9042b037e4f10538f70cf95e380219f
LinuxLinux	Affected ≥ 2ab658f9ce218ae93b3d2db2b3fe68bfefb81196, < 1305f8b925fe92edf5fec183588dfc7db719180b	Fixed in 1305f8b925fe92edf5fec183588dfc7db719180b
LinuxLinux	Affected ≥ 2ab658f9ce218ae93b3d2db2b3fe68bfefb81196, < 539d7f795bf0c41fb533c99e6010cdfaf5a1b6a6	Fixed in 539d7f795bf0c41fb533c99e6010cdfaf5a1b6a6
LinuxLinux	Affected ≥ 2ab658f9ce218ae93b3d2db2b3fe68bfefb81196, < 4cbb2360f4d8c29e67bc7a8bf6ba0ae096583923	Fixed in 4cbb2360f4d8c29e67bc7a8bf6ba0ae096583923
LinuxLinux	Affected =2.6.32	Fixed in–

AI-suggested

A fix is implemented in the Linux kernel to reject duplicate cipher suite entries during wiphy registration, causing malformed wiphy descriptions to fail early. Users should update to the fixed kernel version once available. No additional mitigation is indicated.

Description

A vulnerability in the Linux kernel's cfg80211 component allowed duplicate cipher suite entries in wiphy descriptions. These duplicates do not add capabilities but were accepted, causing issues in consumers like the WEXT compatibility code, which could overflow a fixed-size array. The fix rejects duplicate cipher suite entries early during wiphy registration, preventing malformed descriptions from causing downstream errors.

References

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