VulnerabilityPublished 24 Apr 2026Updated 6 Nov 2026

CVE-2026-31672: Linux kernel · wifi: rt2x00usb: fix devres lifetime

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in e360d15fcb1e819eef49e3d4434d8050542eed16 : update Linux kernel when convenient.

Data as of 6 Nov 2026, 15:49 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 e360d15fcb1e819eef49e3d4434d8050542eed16, c99f198841b41735796e2ddfcd573783fb552eb9, b245db719bc7e57abf48bd5701662b270c3880f7 +5

Exploitation evidence

Disclosed: evidence found.
CVE published 24 Apr 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 ≥ 8b4c0009313f3d42e2540e3e1f776097dd0db73d, < e360d15fcb1e819eef49e3d4434d8050542eed16	Fixed in e360d15fcb1e819eef49e3d4434d8050542eed16
LinuxLinux	Affected ≥ 8b4c0009313f3d42e2540e3e1f776097dd0db73d, < c99f198841b41735796e2ddfcd573783fb552eb9	Fixed in c99f198841b41735796e2ddfcd573783fb552eb9
LinuxLinux	Affected ≥ 8b4c0009313f3d42e2540e3e1f776097dd0db73d, < b245db719bc7e57abf48bd5701662b270c3880f7	Fixed in b245db719bc7e57abf48bd5701662b270c3880f7
LinuxLinux	Affected ≥ 8b4c0009313f3d42e2540e3e1f776097dd0db73d, < 65518a6965d527c53013947031f26754f6a4f6af	Fixed in 65518a6965d527c53013947031f26754f6a4f6af
LinuxLinux	Affected ≥ 8b4c0009313f3d42e2540e3e1f776097dd0db73d, < 25369b22223d1c56e42a0cd4ac9137349d5a898e	Fixed in 25369b22223d1c56e42a0cd4ac9137349d5a898e
LinuxLinux	Affected ≥ 8b4c0009313f3d42e2540e3e1f776097dd0db73d, < 64a457f6afbf15f984d95201a9a1e71eed3f9dd1	Fixed in 64a457f6afbf15f984d95201a9a1e71eed3f9dd1

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: rt2x00usb: fix devres lifetime USB drivers bind to USB interfaces and any device managed resources should have their lifetime tied to the interface rather than parent USB device. This avoids issues like memory leaks when drivers are unbound without their devices being physically disconnected (e.g. on probe deferral or configuration changes). Fix the USB anchor lifetime so that it is released on driver unbind.

References

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