CVE-2022-2663

    Dashboard / Vulnerabilities / CVE-2022-2663

    CVE-2022-2663

    Published: 1 Sept 2022Last Modified: 16 Apr 2026

    Summary:

    Details: 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.

    References: 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://lists.debian.org/debian-lts-announce/2022/10/msg00000.html, https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html, https://www.youtube.com/watch?v=WIq-YgQuYCA, https://dgl.cx/2022/08/nat-again-irc-cve-2022-2663

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2022-2663 | CVE-DB