SB20260905129 - Improper Initialization in Linux kernel usb
Published: September 5, 2026
Security Bulletin ID
SB20260905129
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Physical access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Initialization (CVE-ID: CVE-2026-80816)
CWE-ID: CWE-665 - Improper Initialization
CVSSv4: 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]
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.
Remediation
Install update from vendor's website.