SB2026020488 - Memory leak in Linux kernel l2tp
Published: February 4, 2026
Security Bulletin ID
SB2026020488
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-2026-23072)
CWE-ID: CWE-401 - Missing release of memory after effective lifetime
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 user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the l2tp_udp_encap_recv() function in net/l2tp/l2tp_core.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.