CVE-2026-64601 PUBLISHED

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

Assigner: Linux
Reserved: 19.07.2026 Published: 06.08.2026 Updated: 06.08.2026

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.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from c1bb0c13e430623c26543baae5bb9ae21139db87 to 16f14f55141d4c55c3f321f93c328fff7cd6860a (excl.)
  • affected from c1bb0c13e430623c26543baae5bb9ae21139db87 to ab1db64912428cdf06a4f9542e16e0575e9ad59f (excl.)
  • affected from c1bb0c13e430623c26543baae5bb9ae21139db87 to 5cff1529a2f9b3461a7f5a6e36a86682fc290534 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 6.18 is affected
  • unaffected from 0 to 6.18 (excl.)
  • unaffected from 6.18.39 to 6.18.* (incl.)
  • unaffected from 7.1.4 to 7.1.* (incl.)
  • unaffected from 7.2-rc2 to * (incl.)

References