CVE-2022-4128: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

A NULL pointer dereference issue was discovered in the Linux kernel in the MPTCP protocol when traversing the subflow list at disconnect time. A local user could use this flaw to potentially crash the system causing a denial of service.

Affected products

• Linux Linux Kernel: from 5.17, up to and including 5.18; version 5.19 only

Published 2022-11-28. Last modified 2026-06-17.