CVE-2002-2438: Linux Kernel

High severity, CVSS 7.5. EPSS: 3.7% chance of exploitation in the next 30 days.

TCP firewalls could be circumvented by sending a SYN Packets with other flags (like e.g. RST flag) set, which was not correctly discarded by the Linux TCP stack after firewalling.

Affected products

• Linux Linux Kernel: before 2.4.20 (fixed in 2.4.20)

Published 2021-05-18. Last modified 2026-06-16.