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    CVE-2022-47929

    In the Linux kernel before 6.1.6, a NULL pointer dereference bug in the traffic control subsystem allows an unprivileged user to trigger a denial of service (system crash) via a crafted traffic control configuration that is set up with "tc qdisc" and "tc class" commands. This affects qdisc_graft in net/sched/sch_api.c.

    Published:Jan 9, 2023
    Last Modified:Apr 4, 2025
    EPS:Jan 17, 2023
    EPSS Score:0.0003
    CVSS Score:5.5

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhev Hypervisor

    Exploits

    https://www.spinics.net/lists/netdev/msg555705.htmlhttps://www.spinics.net/lists/netdev/msg555705.html

    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://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.6
    https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=96398560f26aa07e8f2969d73c8197e6a6d10407
    https://lists.debian.org/debian-lts-announce/2023/03/msg00000.html
    https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
    https://tldp.org/HOWTO/Traffic-Control-HOWTO/components.html
    https://www.debian.org/security/2023/dsa-5324
    https://www.spinics.net/lists/netdev/msg555705.html
    https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.6
    https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=96398560f26aa07e8f2969d73c8197e6a6d10407
    https://lists.debian.org/debian-lts-announce/2023/03/msg00000.html
    https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
    https://tldp.org/HOWTO/Traffic-Control-HOWTO/components.html
    https://www.debian.org/security/2023/dsa-5324
    https://www.spinics.net/lists/netdev/msg555705.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