VulnerabilityPublished 6 Oct 2026Updated 21 Oct 2026

CVE-2026-98193: Linux kernel · wifi: libipw: reject TKIP frames without a full MIC

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in f448b267968d0ee985e5927c868c8f858169ab34 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:07 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in f448b267968d0ee985e5927c868c8f858169ab34, bb7ae8910cc886885aea95abb7c2e578a2341646, ac7c08626f67844336086cf563f417566b76f0d7 +2

Exploitation evidence

Disclosed: evidence found.
CVE published 6 Oct 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 to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ b453872c35cfcbdbf5a794737817f7d4e7b1b579, < f448b267968d0ee985e5927c868c8f858169ab34	Fixed in f448b267968d0ee985e5927c868c8f858169ab34
LinuxLinux	Affected ≥ b453872c35cfcbdbf5a794737817f7d4e7b1b579, < bb7ae8910cc886885aea95abb7c2e578a2341646	Fixed in bb7ae8910cc886885aea95abb7c2e578a2341646
LinuxLinux	Affected ≥ b453872c35cfcbdbf5a794737817f7d4e7b1b579, < ac7c08626f67844336086cf563f417566b76f0d7	Fixed in ac7c08626f67844336086cf563f417566b76f0d7
LinuxLinux	Affected ≥ b453872c35cfcbdbf5a794737817f7d4e7b1b579, < 9a7fb67364817710c96785ff86b71a2711ee92cb	Fixed in 9a7fb67364817710c96785ff86b71a2711ee92cb
LinuxLinux	Affected ≥ b453872c35cfcbdbf5a794737817f7d4e7b1b579, < 06f42accaf3c6aecab1dcc57f68dde6c06c8b380	Fixed in 06f42accaf3c6aecab1dcc57f68dde6c06c8b380
LinuxLinux	Affected =2.6.14	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: libipw: reject TKIP frames without a full MIC libipw_michael_mic_verify() assumes that an skb contains an eight-byte Michael MIC. A short TKIP frame makes the unsigned payload length wrap, causing michael_mic() to read past the skb. Check that the MIC is present before verifying it, and use the existing MICHAEL_MIC_LEN constant for all MIC lengths in the verifier.

References

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