CVE-2021-3679

    Dashboard / Vulnerabilities / CVE-2021-3679

    CVE-2021-3679

    Published: 5 Aug 2021Last Modified: 15 Mar 2026

    Summary:

    Details: A lack of CPU resource in the Linux kernel tracing module functionality in versions prior to 5.14-rc3 was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service.

    References: https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html, https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html, https://www.debian.org/security/2021/dsa-4978, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=67f0d6d9883c13174669f88adac4f0ee656cc16a, https://bugzilla.redhat.com/show_bug.cgi?id=1989165

    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-2021-3679 | CVE-DB