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.

A flaw was found in the Linux kernel's ALSA (Advanced Linux Sound Architecture) usx2y us144mkii driver. This vulnerability, a Use-After-Free (UAF), occurs when a USB device is disconnected, leading to a race condition where the system attempts to access memory that has already been released. This could allow a local attacker to cause system instability, crash the system, or potentially execute malicious code.

Red Hat Enterprise Linux 10 Fix deferred kernel Red Hat Enterprise Linux 6 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel-rt Red Hat Enterprise Linux 8 Not affected kernel Red Hat Enterprise Linux 8 Not affected kernel-rt Red Hat Enterprise Linux 9 Fix deferred kernel Red Hat Enterprise Linux 9 Fix deferred kernel-rt https://www.cve.org/CVERecord?id=CVE-2026-64491 https://nvd.nist.gov/vuln/detail/CVE-2026-64491 https://lore.kernel.org/linux-cve-announce/2026072550-CVE-2026-64491-5d80@gregkh/T