---
id: CVE-2026-64601
title: >-
  In the Linux kernel, the following vulnerability has been resolved:


  ALSA: us144mkii: capture_urb_complete: redundant usb_anchor_urb corrupts
  anchor list on each resubmission


  In capture_urb_complete(), usb_anchor_urb() is called on ever…
summary: >-
  In the Linux kernel, the following vulnerability has been resolved:


  ALSA: us144mkii: capture_urb_complete: redundant usb_anchor_urb corrupts
  anchor list on each resubmission


  In capture_urb_complete(), usb_anchor_urb() is called on ever…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
published: '2026-08-06'
updated: '2026-08-08'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-64601'
references:
  - url: 'https://git.kernel.org/stable/c/16f14f55141d4c55c3f321f93c328fff7cd6860a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5cff1529a2f9b3461a7f5a6e36a86682fc290534'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ab1db64912428cdf06a4f9542e16e0575e9ad59f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00124
epssPercentile: 0.02442
ingestedAt: '2026-08-08T21:30:13.409Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

ALSA: us144mkii: capture_urb_complete: redundant usb_anchor_urb corrupts anchor list on each resubmission

In capture_urb_complete(), usb_anchor_urb() is called on every
completion callback, but the URB is already anchored from the
initial submission in tascam_trigger_start(). Each redundant call
corrupts the anchor's doubly-linked list and inflates the URB
refcount. When usb_kill_anchored_urbs() traverses the list during
stream stop / suspend / disconnect, the corrupted list leads to
use-after-free.

Remove the redundant usb_anchor_urb() from the resubmit path.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.