CVE-2026-53107

Published: June 26, 2026Last modified: June 26, 2026

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: libertas: don't kill URBs in interrupt context Serialization for the TX path was enforced by calling usb_kill_urb()/usb_kill_anchored_urbs(), to prevent transmission before a previous URB was completed. usb_tx_block() can be called from interrupt context (e.g. in the HCD giveback path), so we can't always use it to kill in-flight URBs. Prevent sleeping during interrupt context by checking the tx_submitted anchor for existing URBs. We now return -EBUSY, to indicate there's a pending request.

Severity score breakdown

Status

References

• https://git.kernel.org/stable/c/00c0317cebf44151df18fb647781f315268cdd98
• https://git.kernel.org/stable/c/4f273d3f98ebc60c30bbfb3ed4a7f0477d3eaed2
• https://git.kernel.org/stable/c/7c5c2b661bdb78c1472b8833265c9ed1ee880039