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    CVE-2023-42754

    A NULL pointer dereference flaw was found in the Linux kernel ipv4 stack. The socket buffer (skb) was assumed to be associated with a device before calling __ip_options_compile, which is not always the case if the skb is re-routed by ipvs. This issue may allow a local user with CAP_NET_ADMIN privileges to crash the system.

    Published:Sep 17, 2023
    Last Modified:Nov 6, 2025
    EPS:Oct 5, 2023
    EPSS Score:0.0001
    CVSS Score:5.5

    Affected Products

    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    https://seclists.org/oss-sec/2023/q4/14https://seclists.org/oss-sec/2023/q4/14

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    https://access.redhat.com/errata/RHSA-2024:2394
    https://access.redhat.com/errata/RHSA-2024:2950
    https://access.redhat.com/errata/RHSA-2024:3138
    https://access.redhat.com/security/cve/CVE-2023-42754
    https://bugzilla.redhat.com/show_bug.cgi?id=2239845
    https://seclists.org/oss-sec/2023/q4/14
    https://access.redhat.com/errata/RHSA-2024:2394
    https://access.redhat.com/errata/RHSA-2024:2950
    https://access.redhat.com/errata/RHSA-2024:3138
    https://access.redhat.com/security/cve/CVE-2023-42754
    https://bugzilla.redhat.com/show_bug.cgi?id=2239845
    https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
    https://lists.fedoraproject.org/archives/list/[email protected]/message/GISYSL3F6WIEVGHJGLC2MFNTUXHPTKQH/
    https://lists.fedoraproject.org/archives/list/[email protected]/message/GPMICQ2HVZO5UAM5KPXHAZKA2U3ZDOO6/
    https://lists.fedoraproject.org/archives/list/[email protected]/message/V5PDNWPKAP3WL5RQZ4RIDS6MG32OHH5R/
    https://seclists.org/oss-sec/2023/q4/14

    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