SB2026050277 - Out-of-bounds read in Linux kernel pci ctxfi
Published: May 2, 2026
Security Bulletin ID
SB2026050277
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2026-31776)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local attacker to cause a denial of service.
The vulnerability exists due to out-of-bounds array access in daio_device_index() for the ALSA ctxfi hw20k2 SPDIF1 DAIO type when handling a crafted device type. A local attacker can trigger the vulnerable code path to cause a denial of service.
Remediation
Install update from vendor's website.