CVE-2026-64491
- Source
- https://cve.org/CVERecord?id=CVE-2026-64491
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64491.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-64491
- Downstream
- Published
- 2026-07-25T08:51:49.601Z
- Modified
- 2026-07-27T04:02:41.202926464Z
- Summary
- ALSA: usx2y: us144mkii: fix work UAF on disconnect
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
ALSA: usx2y: us144mkii: fix work UAF on disconnect
tascamdisconnect() cancels capturework and midiinwork before usbkillanchored_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 cancelworksync() and usbkillanchoredurbs() therefore re-arms the work after its only cancel. Nothing cancels it again before sndcard_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.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64491.json" }- References
-
- https://git.kernel.org/stable/c/147996e7e7c9e8339c0e04f6fa7ccb3e4d448ff7
- https://git.kernel.org/stable/c/27161c68d5e78807c9d897db222a775b298d05fd
- https://git.kernel.org/stable/c/c071df05bcda0e47aac581d4b564b2bebcb1ff60
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64491.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-64491
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git