Linux kernel is vulnerable to Authentication Bypass. The vulnerability exists in the nf_conntrack_irc
because it incorrectly matches the massage, which allows an attacker to bypass the firewall when users are using unencrypted IRC with nf_conntrack_irc configured
git://git.launchpad.net/ubuntu-cve-tracker/tree/active/CVE-2022-2663
dgl.cx/2022/08/nat-again-irc-cve-2022-2663
lists.debian.org/debian-lts-announce/2022/10/msg00000.html
lists.debian.org/debian-lts-announce/2022/11/msg00001.html
lore.kernel.org/netfilter-devel/20220826045658.100360-1-dgl%40dgl.cx/T/
lore.kernel.org/netfilter-devel/[email protected]/T/
www.debian.org/security/2022/dsa-5257
www.openwall.com/lists/oss-security/2022/08/30/1
www.youtube.com/watch?v=WIq-YgQuYCA