CVE-2026-64491: Linux kernel · ALSA: usx2y: us144mkii: fix work UAF on disconnect
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 3 Nov 2026, 19:14 UTC
Rated High by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
Thin evidence
One scorer or noneExploitation evidence
Disclosed: evidence found.
CVE published 25 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 3 Nov 2026.
What to do
AI-suggested
A fix has been implemented in the Linux kernel to address this issue by changing the order of cancelling work and killing URBs. Users should update to the fixed kernel version once available. No other mitigation steps are indicated.
Description
A use-after-free (UAF) vulnerability in the ALSA usx2y us144mkii driver in the Linux kernel was fixed. The flaw occurs during device disconnect when work items are cancelled in an incorrect order, allowing a work handler to run on freed memory.