VulnerabilityPublished 24 Sep 2026Updated 21 Oct 2026

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

Affects Linux kernelSource CVE Database V5

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

Data as of 26 Oct 2026, 17:16 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in d12e92e72db914e1ea777c6f246f6be75985438e, 7187d145d9042b037e4f10538f70cf95e380219f, 1305f8b925fe92edf5fec183588dfc7db719180b +1

Exploitation evidence

Disclosed: evidence found.
CVE published 24 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 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.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, 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.

What to do

Upgrade Linux kernel to d12e92e72db914e1ea777c6f246f6be75985438e, 7187d145d9042b037e4f10538f70cf95e380219f, 1305f8b925fe92edf5fec183588dfc7db719180b or 4cbb2360f4d8c29e67bc7a8bf6ba0ae096583923.

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, < 4cbb2360f4d8c29e67bc7a8bf6ba0ae096583923	Fixed in 4cbb2360f4d8c29e67bc7a8bf6ba0ae096583923
LinuxLinux	Affected =2.6.32	Fixed in–

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.

References

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