SB2026062592 - Race condition in Linux kernel sctp

Description

This security bulletin contains information about 1 vulnerability.

1) Race condition (CVE-ID: CVE-2026-53070)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

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 cause a denial of service.

The vulnerability exists due to improper synchronization in SCTP over UDP transmission handling in net/sctp/ipv6.c and net/sctp/protocol.c when transmitting SCTP packets over UDP. A local user can trigger SCTP over UDP traffic to cause a denial of service.

Exploitation requires SCTP over UDP to be enabled.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/2cd7e6971fc2787408ceef17906ea152791448cf
• https://git.kernel.org/stable/c/790093245e35040c2adb15f48970020425aa3f47