VulnerabilityPublished 10 Aug 2026Updated 6 Nov 2026

CVE-2026-68406: Linux kernel · wifi: cfg80211: validate PMSR FTM preamble range

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in cfbda103aeae61071a122a6fc2bfe98cffbd7165 : update Linux kernel when convenient.

Data as of 6 Nov 2026, 17:19 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch

Available – fixed in cfbda103aeae61071a122a6fc2bfe98cffbd7165, 36230936468f0ba4930e94aef496fc229d4bb951, 58320cb47df2accc7a20bb72c0150280732fa58f +5

Exploitation evidence

Disclosed: evidence found.
CVE published 10 Aug 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 6 Nov 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.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 9bb7e0f24e7e7d00daa1219b14539e2e602649b2, < cfbda103aeae61071a122a6fc2bfe98cffbd7165	Fixed in cfbda103aeae61071a122a6fc2bfe98cffbd7165
LinuxLinux	Affected ≥ 9bb7e0f24e7e7d00daa1219b14539e2e602649b2, < 36230936468f0ba4930e94aef496fc229d4bb951	Fixed in 36230936468f0ba4930e94aef496fc229d4bb951
LinuxLinux	Affected ≥ 9bb7e0f24e7e7d00daa1219b14539e2e602649b2, < 58320cb47df2accc7a20bb72c0150280732fa58f	Fixed in 58320cb47df2accc7a20bb72c0150280732fa58f
LinuxLinux	Affected ≥ 9bb7e0f24e7e7d00daa1219b14539e2e602649b2, < 922d71fbaf99c1d5318151a0cb0a42ad448d07d9	Fixed in 922d71fbaf99c1d5318151a0cb0a42ad448d07d9
LinuxLinux	Affected ≥ 9bb7e0f24e7e7d00daa1219b14539e2e602649b2, < 73ada9f23c2c7fac74474ea2a38ceb265bae17f1	Fixed in 73ada9f23c2c7fac74474ea2a38ceb265bae17f1
LinuxLinux	Affected ≥ 9bb7e0f24e7e7d00daa1219b14539e2e602649b2, < 44ea65d779e2d23b2264fea6af2d0c666a3ec9fb	Fixed in 44ea65d779e2d23b2264fea6af2d0c666a3ec9fb

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: validate PMSR FTM preamble range PMSR FTM request parsing accepts preamble values outside the enumerated nl80211 preamble range. Reject out-of-range values before using them in the parser capability bit test using the policy. [drop unnecessary check]

References

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