Improper Initialization in Linux kernel - CVE-2026-80816
Published: September 5, 2026
Vulnerability identifier: #VU147098
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-80816
CWE-ID: CWE-665
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows an attacker with physical access to cause a denial of service.
The vulnerability exists due to improper initialization in the ALSA FCP notification handler when initializing FCP notifications on a device with an optional UAC2 status interrupt endpoint. An attacker with physical access can trigger FCP initialization to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-80816
Install security update from vendor's repository.