SB20260816483 - Improper control of a resource through its lifetime in Linux kernel xfrm
Published: August 16, 2026
Security Bulletin ID
SB20260816483
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) Improper control of a resource through its lifetime (CVE-ID: CVE-2026-72041)
CWE-ID: CWE-664 - Improper control of a resource through its 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 cause a denial of service.
The vulnerability exists due to improper resource management in espintcp_sendskmsg_locked in net/xfrm/espintcp.c when handling partial sends of sk_msg data. A local user can trigger partial send conditions to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/007800408002d871f5699bdb944f985896730b8f
- https://git.kernel.org/stable/c/14c0b42c8a2cd9b5361bbff45b52f69c62c6a286
- https://git.kernel.org/stable/c/54d73f18f8919735f4d04d6f43374f75756c0180
- https://git.kernel.org/stable/c/a338ce41bc933d8f74c39d9b3b6f1d8ca53d9714
- https://git.kernel.org/stable/c/a66d45e0ce6d73cd79962d422388e61bfaf0cb50