VulnerabilityPublished 27 May 2026Updated 6 Nov 2026

CVE-2026-46069: Linux kernel · wifi: mwifiex: fix use-after-free in mwifiex_adapter_cleanup()

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in c3508895450cca4aeaf5dbadbb5e582363005264 : update Linux kernel when convenient.

Data as of 6 Nov 2026, 16:34 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 c3508895450cca4aeaf5dbadbb5e582363005264, ae5e95d4157481693be2317e3ffcd84e36010cbb, a88f5391dc68f78cae5eb6a8cd341cafee795d3d +5

Exploitation evidence

Disclosed: evidence found.
CVE published 27 May 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 ≥ 4636187da60b6e33526050235c610409d9cc00e8, < c3508895450cca4aeaf5dbadbb5e582363005264	Fixed in c3508895450cca4aeaf5dbadbb5e582363005264
LinuxLinux	Affected ≥ 4636187da60b6e33526050235c610409d9cc00e8, < ae5e95d4157481693be2317e3ffcd84e36010cbb	Fixed in ae5e95d4157481693be2317e3ffcd84e36010cbb
LinuxLinux	Affected ≥ 4636187da60b6e33526050235c610409d9cc00e8, < a88f5391dc68f78cae5eb6a8cd341cafee795d3d	Fixed in a88f5391dc68f78cae5eb6a8cd341cafee795d3d
LinuxLinux	Affected ≥ 4636187da60b6e33526050235c610409d9cc00e8, < 11869ce402d95519d49b25a2a97741f68d69d103	Fixed in 11869ce402d95519d49b25a2a97741f68d69d103
LinuxLinux	Affected ≥ 4636187da60b6e33526050235c610409d9cc00e8, < 1958a92599b2653d730ccb6f5685fc3fbed21812	Fixed in 1958a92599b2653d730ccb6f5685fc3fbed21812
LinuxLinux	Affected ≥ 4636187da60b6e33526050235c610409d9cc00e8, < 63fe3389b3e092d6c0eeea9fc0318e7918b16618	Fixed in 63fe3389b3e092d6c0eeea9fc0318e7918b16618

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mwifiex: fix use-after-free in mwifiex_adapter_cleanup() The mwifiex_adapter_cleanup() function uses timer_delete() (non-synchronous) for the wakeup_timer before the adapter structure is freed. This is incorrect because timer_delete() does not wait for any running timer callback to complete. If the wakeup_timer callback (wakeup_timer_fn) is executing when mwifiex_adapter_cleanup() is called, the callback will continue to access adapter fields (adapter->hw_status, adapter->if_ops.card_reset, etc.) which may be freed by mwifiex_free_adapter() called later in the mwifiex_remove_card() path. Use timer_delete_sync() instead to ensure any running timer callback has completed before returning.

References

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