VulnerabilityPublished 23 Jan 2026Updated 5 Nov 2026

CVE-2026-22978: Linux kernel · wifi: avoid kernel-infoleak from struct iw_point

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in e3c35177103ead4658b8a62f41e3080d45885464 : update Linux kernel when convenient.

Data as of 5 Nov 2026, 23:24 UTC

Severity

Unrated

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

Thin evidence

One scorer or none

EPSS

0.1% chance of exploitation in 30 days – higher than 3% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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, 2026-11-05.

Patch

Available – fixed in e3c35177103ead4658b8a62f41e3080d45885464, d943b5f592767b107ba8c12a902f17431350378c, d21ec867d84c9f3a9845d7d8c90c9ce35dbe48f8 +4

Exploitation evidence

Disclosed: evidence found.
CVE published 23 Jan 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 5 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 ≥ 87de87d5e47f94b4ea647a5bd1bc8dc1f7930db4, < e3c35177103ead4658b8a62f41e3080d45885464	Fixed in e3c35177103ead4658b8a62f41e3080d45885464
LinuxLinux	Affected ≥ 87de87d5e47f94b4ea647a5bd1bc8dc1f7930db4, < d943b5f592767b107ba8c12a902f17431350378c	Fixed in d943b5f592767b107ba8c12a902f17431350378c
LinuxLinux	Affected ≥ 87de87d5e47f94b4ea647a5bd1bc8dc1f7930db4, < d21ec867d84c9f3a9845d7d8c90c9ce35dbe48f8	Fixed in d21ec867d84c9f3a9845d7d8c90c9ce35dbe48f8
LinuxLinux	Affected ≥ 87de87d5e47f94b4ea647a5bd1bc8dc1f7930db4, < a3827e310b5a73535646ef4a552d53b3c8bf74f6	Fixed in a3827e310b5a73535646ef4a552d53b3c8bf74f6
LinuxLinux	Affected ≥ 87de87d5e47f94b4ea647a5bd1bc8dc1f7930db4, < 442ceac0393185e9982323f6682a52a53e8462b1	Fixed in 442ceac0393185e9982323f6682a52a53e8462b1
LinuxLinux	Affected ≥ 87de87d5e47f94b4ea647a5bd1bc8dc1f7930db4, < 024f71a57d563fbe162e528c8bf2d27e9cac7c7b	Fixed in 024f71a57d563fbe162e528c8bf2d27e9cac7c7b

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: avoid kernel-infoleak from struct iw_point struct iw_point has a 32bit hole on 64bit arches. struct iw_point { void __user *pointer; /* Pointer to the data (in user space) */ __u16 length; /* number of fields or size in bytes */ __u16 flags; /* Optional params */ }; Make sure to zero the structure to avoid disclosing 32bits of kernel data to user space.

References

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