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    Dashboard / CVE / CVE-2023-31436

    CVE-2023-31436

    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.

    Published:Apr 13, 2023
    Last Modified:Nov 21, 2024
    EPS:Apr 28, 2023
    EPSS Score:0.00036
    CVSS Score:7.8

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel Aus
    Vendor
    Redhat
    Product
    Rhel E4s
    Vendor
    Redhat
    Product
    Rhel Els
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhel Extras Rt
    Vendor
    Redhat
    Product
    Rhel Tus
    Vendor
    Redhat
    Product
    Rhev Hypervisor

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-787 Out-of-bounds Write

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

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

    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