CVE-2026-64465

kernel: usb: xhci: Fix sleep in atomic context in xhci_free_streams()

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Severity

Low

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · July 25, 2026

Updated · July 30, 2026

Description

A flaw was found in the Linux kernel's USB xHCI (eXtensible Host Controller Interface) driver. When a USB device with active stream endpoints is disconnected, the system attempts to free stream resources while holding a lock with interrupts disabled. This can lead to a situation where a function that is designed to sleep is called in an atomic context, triggering a kernel bug and causing a system crash. This vulnerability could allow a local attacker to cause a Denial of Service (DoS).

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 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-413 · Improper Resource Locking