SB2026062558 - Improper locking in Linux kernel marvell libertas driver

Description

This security bulletin contains information about 1 vulnerability.

1) Improper locking (CVE-ID: CVE-2026-53107)

CWE-ID: CWE-667 - Improper Locking

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper handling of urb cancellation in drivers/net/wireless/marvell/libertas/if_usb.c when processing usb transmit requests in interrupt context. A local user can trigger transmission while a previous urb is still pending to cause a denial of service.

The issue occurs because the transmit path may be reached from interrupt context, where sleeping is not allowed.

Remediation

Install update from vendor's website.

References

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