SB2025120496 - Memory leak in Linux kernel xfrm
Published: December 4, 2025
Security Bulletin ID
SB2025120496
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 security vulnerability.
1) Memory leak (CVE-ID: CVE-2025-40256)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the xfrm_state_free(), xfrm_state_gc_destroy() and __xfrm_state_destroy() functions in net/xfrm/xfrm_state.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.