SB2026102396 - Memory leak in Linux kernel pci ctxfi
Published: October 23, 2026
Security Bulletin ID
SB2026102396
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) Memory leak (CVE-ID: CVE-2026-99068)
CWE-ID: CWE-401 - Missing release of memory after effective lifetime
CVSSv4: 6.8 [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]
The vulnerability allows a local user to exhaust kernel memory and potentially cause a denial of service.
The vulnerability exists due to missing release of allocated memory in the ALSA ctxfi driver's dao_clear_input() function when clearing DAO input mappers. A local user can trigger repeated mapper clearing to leak allocated mapper arrays, potentially exhausting kernel memory and causing a denial of service.
Remediation
Install update from vendor's website.