vulnerability
Arch Linux: Improper Restriction of Communication Channel to Intended Endpoints (CVE-2022-2663)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:N/I:P/A:N) | Sep 1, 2022 | Jul 11, 2025 | Nov 27, 2025 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:P/A:N)
Published
Sep 1, 2022
Added
Jul 11, 2025
Modified
Nov 27, 2025
Description
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.
Solution
arch-linux-upgrade-latest
References
- CVE-2022-2663
- https://attackerkb.com/topics/CVE-2022-2663
- URL-https://dgl.cx/2022/08/nat-again-irc-cve-2022-2663
- URL-https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html
- URL-https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html
- URL-https://lore.kernel.org/netfilter-devel/20220826045658.100360-1-dgl%40dgl.cx/T/
- URL-https://www.debian.org/security/2022/dsa-5257
- URL-https://www.openwall.com/lists/oss-security/2022/08/30/1
- URL-https://www.youtube.com/watch?v=WIq-YgQuYCA
- CWE-923
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