UBUNTU-CVE-2017-12168

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    UBUNTU-CVE-2017-12168

    Published: 20 Sept 2017Last Modified: 16 Jul 2025
    Upstream:
    CVE-2017-12168

    Summary:

    Details: The access_pmu_evcntr function in arch/arm64/kvm/sys_regs.c in the Linux kernel before 4.8.11 allows privileged KVM guest OS users to cause a denial of service (assertion failure and host OS crash) by accessing the Performance Monitors Cycle Count Register (PMCCNTR).

    References: https://ubuntu.com/security/CVE-2017-12168, https://git.kernel.org/linus/9e3f7a29694049edd728e2400ab57ad7553e5aa9, http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9e3f7a29694049edd728e2400ab57ad7553e5aa9, http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.11, https://bugzilla.redhat.com/show_bug.cgi?id=1492984, https://github.com/torvalds/linux/commit/9e3f7a29694049edd728e2400ab57ad7553e5aa9, https://www.cve.org/CVERecord?id=CVE-2017-12168

    Affected packages

    Package

    Name: linux-azure

    Purl: pkg:deb/ubuntu/[email protected]~14.04.1?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -4.15.0-1023.24~14.04.1

    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