CVE-2018-20784

    Dashboard / Vulnerabilities / CVE-2018-20784

    CVE-2018-20784

    Published: 22 Feb 2019Last Modified: 15 Mar 2026

    Summary:

    Details: In the Linux kernel before 4.20.2, kernel/sched/fair.c mishandles leaf cfs_rq's, which allows attackers to cause a denial of service (infinite loop in update_blocked_averages) or possibly have unspecified other impact by inducing a high load.

    References: https://usn.ubuntu.com/4118-1/, https://usn.ubuntu.com/4211-2/, https://access.redhat.com/errata/RHSA-2019:1959, https://access.redhat.com/errata/RHSA-2019:1971, https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.2, https://usn.ubuntu.com/4115-1/, https://usn.ubuntu.com/4211-1/, https://github.com/torvalds/linux/commit/c40f7d74c741a907cfaeb73a7697081881c497d0, http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c40f7d74c741a907cfaeb73a7697081881c497d0

    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