CVE-2023-42753

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    CVE-2023-42753

    Published: 25 Sept 2023Last Modified: 23 Mar 2026

    Summary:

    Details: An array indexing vulnerability was found in the netfilter subsystem of the Linux kernel. A missing macro could lead to a miscalculation of the `h->nets` array offset, providing attackers with the primitive to arbitrarily increment/decrement a memory buffer out-of-bound. This issue may allow a local user to crash the system or potentially escalate their privileges on the system.

    References: https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html, https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html, http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html, https://www.openwall.com/lists/oss-security/2023/09/22/10, https://access.redhat.com/errata/RHSA-2023:7370, https://access.redhat.com/errata/RHSA-2024:0376, https://access.redhat.com/errata/RHSA-2024:0412, https://access.redhat.com/errata/RHSA-2024:0403, https://access.redhat.com/errata/RHSA-2024:0562, https://access.redhat.com/errata/RHSA-2024:0999, https://access.redhat.com/errata/RHSA-2023:7418, https://access.redhat.com/errata/RHSA-2023:7539, https://access.redhat.com/errata/RHSA-2024:0113, https://access.redhat.com/errata/RHSA-2024:0346, https://access.redhat.com/errata/RHSA-2023:7379, https://access.redhat.com/errata/RHSA-2023:7382, https://access.redhat.com/errata/RHSA-2023:7389, https://access.redhat.com/errata/RHSA-2023:7411, https://access.redhat.com/errata/RHSA-2023:7558, https://access.redhat.com/errata/RHSA-2024:0134, https://access.redhat.com/errata/RHSA-2024:0340, https://access.redhat.com/errata/RHSA-2024:0593, https://access.redhat.com/security/cve/CVE-2023-42753, https://access.redhat.com/errata/RHSA-2024:0461, https://access.redhat.com/errata/RHSA-2024:0347, https://access.redhat.com/errata/RHSA-2024:0089, https://access.redhat.com/errata/RHSA-2024:0371, https://access.redhat.com/errata/RHSA-2024:0378, https://access.redhat.com/errata/RHSA-2024:0402, https://access.redhat.com/errata/RHSA-2024:0563, https://bugzilla.redhat.com/show_bug.cgi?id=2239843, https://seclists.org/oss-sec/2023/q3/216

    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-2023-42753 | CVE-DB