---
cve: "CVE-2026-64491"
severity: "LOW"
cvss: 3.1
epss: "17%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-07-25 10:17:34"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-08T19:10:14+02:00"
---

# CVE-2026-64491

> 3.1 LOW

## Beschreibung

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

ALSA: usx2y: us144mkii: fix work UAF on disconnect

tascam_disconnect() cancels capture_work and midi_in_work before
usb_kill_anchored_urbs() kills the capture/MIDI-in URBs.  Those URBs
self-resubmit, and their completion handlers reschedule the work.

A URB that completes in the small window between cancel_work_sync() and
usb_kill_anchored_urbs() therefore re-arms the work after its only
cancel.  Nothing cancels it again before snd_card_free() frees the
card-private tascam structure, so the work handler then runs on freed
memory.

Kill the anchored URBs before cancelling the work; once the work is
cancelled no remaining URB can complete to re-arm it.

## Patch verfügbar (OSV)

- Kernel ≥ 6.18.39
- Kernel ≥ 7.1.4

## Referenzen

- <https://git.kernel.org/stable/c/c071df05bcda0e47aac581d4b564b2bebcb1ff60>
- <https://git.kernel.org/stable/c/27161c68d5e78807c9d897db222a775b298d05fd>
- <https://git.kernel.org/stable/c/147996e7e7c9e8339c0e04f6fa7ccb3e4d448ff7>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-64491) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_