SB20260815317 - Memory leak in Linux kernel sctp

Description

This security bulletin contains information about 1 vulnerability.

1) Memory leak (CVE-ID: CVE-2026-72413)

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to a memory leak in SCTP INIT handling in net/sctp/sm_statefuns.c when processing INIT chunks with unrecognized parameters. A remote attacker can send a specially crafted INIT chunk to cause a denial of service.

The issue occurs when err_chunk is allocated by sctp_verify_init() and is not freed on certain error and success return paths.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/94f55994e19e8f0676990b9d5015b58ab6a97e00
• https://git.kernel.org/stable/c/9f58a0a4d6c2ed5d341bba64f058f15d1b0c36f2