Linux Kernel RT2x00USB devres Lifetime Memory Leak Fix
CVE-2026-31672 Published on April 24, 2026
wifi: rt2x00usb: fix devres lifetime
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.
Products Associated with CVE-2026-31672
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Affected Versions
Linux:- Version 8b4c0009313f3d42e2540e3e1f776097dd0db73d and below 64a457f6afbf15f984d95201a9a1e71eed3f9dd1 is affected.
- Version 8b4c0009313f3d42e2540e3e1f776097dd0db73d and below 65518a6965d527c53013947031f26754f6a4f6af is affected.
- Version 8b4c0009313f3d42e2540e3e1f776097dd0db73d and below 15b233e33b35b927bd8d0044c15325564ea1ba24 is affected.
- Version 8b4c0009313f3d42e2540e3e1f776097dd0db73d and below 1de5c76bf40e9cdeebf54662f63011fb10fa452f is affected.
- Version 8b4c0009313f3d42e2540e3e1f776097dd0db73d and below b245db719bc7e57abf48bd5701662b270c3880f7 is affected.
- Version 8b4c0009313f3d42e2540e3e1f776097dd0db73d and below e360d15fcb1e819eef49e3d4434d8050542eed16 is affected.
- Version 8b4c0009313f3d42e2540e3e1f776097dd0db73d and below c99f198841b41735796e2ddfcd573783fb552eb9 is affected.
- Version 8b4c0009313f3d42e2540e3e1f776097dd0db73d and below 25369b22223d1c56e42a0cd4ac9137349d5a898e is affected.
- Version 4.7 is affected.
- Before 4.7 is unaffected.
- Version 5.10.253, <= 5.10.* is unaffected.
- Version 5.15.203, <= 5.15.* is unaffected.
- Version 6.1.169, <= 6.1.* is unaffected.
- Version 6.6.135, <= 6.6.* is unaffected.
- Version 6.12.82, <= 6.12.* is unaffected.
- Version 6.18.23, <= 6.18.* is unaffected.
- Version 6.19.13, <= 6.19.* is unaffected.
- Version 7.0, <= * is unaffected.