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    CVE-2020-25220

    The Linux kernel 4.9.x before 4.9.233, 4.14.x before 4.14.194, and 4.19.x before 4.19.140 has a use-after-free because skcd->no_refcnt was not considered during a backport of a CVE-2020-14356 patch. This is related to the cgroups feature.

    Published:Jul 22, 2020
    Last Modified:Nov 21, 2024
    EPS:Sep 10, 2020
    EPSS Score:0.00084
    CVSS Score:7.8

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-416 Use After Free

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    https://bugzilla.redhat.com/show_bug.cgi?id=1868453
    https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.194
    https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.140
    https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.233
    https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-4.14.y&id=82fd2138a5ffd7e0d4320cdb669e115ee976a26e
    https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html
    https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html
    https://security.netapp.com/advisory/ntap-20201001-0004/
    https://www.spinics.net/lists/stable/msg405099.html
    https://bugzilla.redhat.com/show_bug.cgi?id=1868453
    https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.194
    https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.140
    https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.233
    https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-4.14.y&id=82fd2138a5ffd7e0d4320cdb669e115ee976a26e
    https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html
    https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html
    https://security.netapp.com/advisory/ntap-20201001-0004/
    https://www.spinics.net/lists/stable/msg405099.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