VulnerabilityPublished 25 Mar 2026Updated 5 Nov 2026

CVE-2026-23315: Linux kernel · wifi: mt76: Fix possible oob access in mt76_connac2_mac_write_txwi_80211()

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in 84419556359bc96d3fe1623d47a64c86542566cc : 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 2% 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 84419556359bc96d3fe1623d47a64c86542566cc, 9612d91f617231e03c49cb9b0c02f975a3b4f51f, 7b692dff8df0ba5feb8df00f27d906d6eb1fe627 +3

Exploitation evidence

Disclosed: evidence found.
CVE published 25 Mar 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 ≥ 577dbc6c656da6997dddc6cf842b7954588f2d4e, < 84419556359bc96d3fe1623d47a64c86542566cc	Fixed in 84419556359bc96d3fe1623d47a64c86542566cc
LinuxLinux	Affected ≥ 577dbc6c656da6997dddc6cf842b7954588f2d4e, < 9612d91f617231e03c49cb9b0c02f975a3b4f51f	Fixed in 9612d91f617231e03c49cb9b0c02f975a3b4f51f
LinuxLinux	Affected ≥ 577dbc6c656da6997dddc6cf842b7954588f2d4e, < 7b692dff8df0ba5feb8df00f27d906d6eb1fe627	Fixed in 7b692dff8df0ba5feb8df00f27d906d6eb1fe627
LinuxLinux	Affected ≥ 577dbc6c656da6997dddc6cf842b7954588f2d4e, < 7ae7b093b7dba9548a3bc4766b9364b97db4732d	Fixed in 7ae7b093b7dba9548a3bc4766b9364b97db4732d
LinuxLinux	Affected ≥ 577dbc6c656da6997dddc6cf842b7954588f2d4e, < 4e10a730d1b511ff49723371ed6d694dd1b2c785	Fixed in 4e10a730d1b511ff49723371ed6d694dd1b2c785
LinuxLinux	Affected ≥ 577dbc6c656da6997dddc6cf842b7954588f2d4e, < 0fb3b94a9431a3800717e5c3b6fa2e1045a15029	Fixed in 0fb3b94a9431a3800717e5c3b6fa2e1045a15029

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: Fix possible oob access in mt76_connac2_mac_write_txwi_80211() Check frame length before accessing the mgmt fields in mt76_connac2_mac_write_txwi_80211 in order to avoid a possible oob access. [fix check to also cover mgmt->u.action.u.addba_req.capab, correct Fixes tag]

References

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