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CVE-2026-64340

kernel: USB: legousbtower: fix use-after-free on disconnect race

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Severity

Moderate

Red Hat Product Security

7

CVSS 3.1

Review impact separately from score.

Published · July 25, 2026

Updated · September 4, 2026

Description

A flaw was found in the Linux kernel's legousbtower USB driver. This vulnerability is a use-after-free, which means the system attempts to use memory after it has been released. It occurs due to a timing issue (race condition) when a USB device is disconnected, potentially leading to system instability or crashes.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-364 · Signal Handler Race Condition