CVE-2022-2663
Moderate
CVE-2022-2663
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.
Exploit probability
1.5%
Published
September 1, 2022
Required by
Not available
Last source change
April 16, 2026
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Open Source Vulnerabilities
CVE-2022-2663
View original source
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.
05 / REFERENCES
Further evidence
- https://dgl.cx/2022/08/nat-again-irc-cve-2022-2663
- https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html
- https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html
- https://lore.kernel.org/netfilter-devel/20220826045658.100360-1-dgl%40dgl.cx/T/
- https://www.debian.org/security/2022/dsa-5257
- https://www.openwall.com/lists/oss-security/2022/08/30/1
- https://www.youtube.com/watch?v=WIq-YgQuYCA