UBUNTU-CVE-2012-4461

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    UBUNTU-CVE-2012-4461

    Published: 6 Nov 2012Last Modified: 4 Feb 2026
    Upstream:
    CVE-2012-4461
    Aliases:
    USN-1688-1
    USN-1689-1
    USN-1696-1

    Summary:

    Details: The KVM subsystem in the Linux kernel before 3.6.9, when running on hosts that use qemu userspace without XSAVE, allows local users to cause a denial of service (kernel OOPS) by using the KVM_SET_SREGS ioctl to set the X86_CR4_OSXSAVE bit in the guest cr4 register, then calling the KVM_RUN ioctl.

    References: https://ubuntu.com/security/CVE-2012-4461, http://www.openwall.com/lists/oss-security/2012/11/06/14, http://article.gmane.org/gmane.comp.emulators.kvm.devel/100742, https://ubuntu.com/security/notices/USN-1688-1, https://ubuntu.com/security/notices/USN-1689-1, https://ubuntu.com/security/notices/USN-1696-1, https://ubuntu.com/security/notices/USN-1699-1, https://ubuntu.com/security/notices/USN-1704-1, https://www.cve.org/CVERecord?id=CVE-2012-4461

    Affected packages

    Package

    Name: linux

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.11.0-12.19

    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