UBUNTU-CVE-2021-38200

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    UBUNTU-CVE-2021-38200

    Published: 8 Aug 2021Last Modified: 4 Feb 2026
    Upstream:
    CVE-2021-38200
    Aliases:
    USN-5070-1

    Summary:

    Details: arch/powerpc/perf/core-book3s.c in the Linux kernel before 5.12.13, on systems with perf_event_paranoid=-1 and no specific PMU driver support registered, allows local users to cause a denial of service (perf_instruction_pointer NULL pointer dereference and OOPS) via a "perf record" command.

    References: https://ubuntu.com/security/CVE-2021-38200, https://github.com/torvalds/linux/commit/60b7ed54a41b550d50caf7f2418db4a7e75b5bdc, https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.13, https://ubuntu.com/security/notices/USN-5070-1, https://www.cve.org/CVERecord?id=CVE-2021-38200

    Affected packages

    Package

    Name: linux-hwe-edge

    Purl: pkg:deb/ubuntu/[email protected]~16.04.1?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    4.8.0-28.30~16.04.1
    4.8.0-30.32~16.04.1
    4.8.0-32.34~16.04.1
    4.8.0-34.36~16.04.1

    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
    UBUNTU-CVE-2021-38200 | CVE-DB