CVE-2023-31436

    Dashboard / Vulnerabilities / CVE-2023-31436

    CVE-2023-31436

    Published: 28 Apr 2023Last Modified: 16 Apr 2026

    Summary:

    Details: qfq_change_class in net/sched/sch_qfq.c in the Linux kernel before 6.2.13 allows an out-of-bounds write because lmax can exceed QFQ_MIN_LMAX.

    References: http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html, https://security.netapp.com/advisory/ntap-20230609-0001/, http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html, http://packetstormsecurity.com/files/173757/Kernel-Live-Patch-Security-Notice-LSN-0096-1.html, https://lists.debian.org/debian-lts-announce/2023/06/msg00008.html, https://www.debian.org/security/2023/dsa-5402, https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.13, https://github.com/torvalds/linux/commit/3037933448f60f9acb705997eae62013ecb81e0d, https://www.spinics.net/lists/stable-commits/msg294885.html

    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-2023-31436 | CVE-DB