VulnerabilityPublished 17 Sep 2026Updated 21 Oct 2026

CVE-2026-90375: Linux kernel · wifi: mt76: fix non-AQL packet accounting for MLO stations

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in fc7fae55255ccbde009232e84b102d2782a69ecf : update Linux kernel when convenient.

Data as of 26 Oct 2026, 20:05 UTC

Severity

Medium

Rated Medium by Threat Radar's AI analysis · 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 fc7fae55255ccbde009232e84b102d2782a69ecf, f85f6933cc170155f1c7c2dffdd014965787c71b, 186c957ac3325aefb982567ffdd3654b283688a7 +2

Exploitation evidence

Disclosed: evidence found.
CVE published 17 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 to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ e1378e5228aaa1bf6bb253a379c7de1722a94e00, < fc7fae55255ccbde009232e84b102d2782a69ecf	Fixed in fc7fae55255ccbde009232e84b102d2782a69ecf
LinuxLinux	Affected ≥ e1378e5228aaa1bf6bb253a379c7de1722a94e00, < f85f6933cc170155f1c7c2dffdd014965787c71b	Fixed in f85f6933cc170155f1c7c2dffdd014965787c71b
LinuxLinux	Affected ≥ e1378e5228aaa1bf6bb253a379c7de1722a94e00, < 186c957ac3325aefb982567ffdd3654b283688a7	Fixed in 186c957ac3325aefb982567ffdd3654b283688a7
LinuxLinux	Affected ≥ e1378e5228aaa1bf6bb253a379c7de1722a94e00, < 8ae659743ba936b22ecb4620815887728e2820d6	Fixed in 8ae659743ba936b22ecb4620815887728e2820d6
LinuxLinux	Affected ≥ e1378e5228aaa1bf6bb253a379c7de1722a94e00, < 2c321f86846ead00552bc65f73f5b5f1f81d4023	Fixed in 2c321f86846ead00552bc65f73f5b5f1f81d4023
LinuxLinux	Affected =5.10	Fixed in–

AI-suggested

A fix is available and has been applied in the Linux kernel. Users should update to a Linux kernel version that includes the commit fixes identified by the hashes fc7fae55255ccbde009232e84b102d2782a69ecf, f85f6933cc170155f1c7c2dffdd014965787c71b, 186c957ac3325aefb982567ffdd3654b283688a7, 8ae659743ba936b22ecb4620815887728e2820d6, or 2c321f86846ead00552bc65f73f5b5f1f81d4023. No additional mitigation steps are indicated.

Description

A vulnerability in the Linux kernel's mt76 WiFi driver caused incorrect accounting of non-AQL packets for MLO stations, potentially leading to the TX scheduler permanently refusing to service a station. This was due to reassignment of the wcid after transmission, causing counters to be updated on the wrong wcid. The issue has been fixed by dropping the reassignment and accounting on the actual wcid used for transmission.

Impact

The vulnerability could cause the TX scheduler to permanently stop servicing a station once the non-AQL packet counter was incorrectly inflated beyond a threshold. This could lead to denial of service for affected WiFi stations using MLO with multiple links (e.g., 5G and 2G). There is no indication of remote code execution or privilege escalation. No known exploits in the wild have been reported.

References

Community reviews

Loading reviews…

Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 26 Oct 2026, 20:05 UTC

Technical details

References

Community reviews

Related threats