CVE-2022-2663: Debian Linux

Medium severity, CVSS 5.3. EPSS: 3.2% chance of exploitation in the next 30 days.

An issue was found in the Linux kernel in nf_conntrack_irc where the message handling can be confused and incorrectly matches the message. A firewall may be able to be bypassed when users are using unencrypted IRC with nf_conntrack_irc configured.

Affected products

• Debian Debian Linux: version 10.0 only; version 11.0 only
• Linux Linux Kernel: affected versions not specified

Published 2022-09-01. Last modified 2026-06-17.