Double free in Linux kernel - CVE-2026-98066
Published: September 28, 2026
Vulnerability identifier: #VU152406
CSH Severity: Low
CVSS v4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-98066
CWE-ID: CWE-415
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a double free in the ALSA caiaq driver's audio resource cleanup when handling audio initialization errors. A local user can trigger an audio initialization error after URB resources have been freed to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-98066
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3