UBUNTU-CVE-2012-2121

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    UBUNTU-CVE-2012-2121

    Published: 17 May 2012Last Modified: 4 Feb 2026
    Upstream:
    CVE-2012-2121
    Aliases:
    USN-1260-1
    USN-1457-1
    USN-1470-1

    Summary:

    Details: The KVM implementation in the Linux kernel before 3.3.4 does not properly manage the relationships between memory slots and the iommu, which allows guest OS users to cause a denial of service (memory leak and host OS crash) by leveraging administrative access to the guest OS to conduct hotunplug and hotplug operations on devices.

    References: https://ubuntu.com/security/CVE-2012-2121, http://www.openwall.com/lists/oss-security/2012/04/19/16, https://lkml.org/lkml/2012/4/11/248, https://ubuntu.com/security/notices/USN-1457-1, https://ubuntu.com/security/notices/USN-1470-1, https://ubuntu.com/security/notices/USN-1471-1, https://ubuntu.com/security/notices/USN-1472-1, https://ubuntu.com/security/notices/USN-1473-1, https://ubuntu.com/security/notices/USN-1474-1, https://ubuntu.com/security/notices/USN-1476-1, https://ubuntu.com/security/notices/USN-1260-1, https://ubuntu.com/security/notices/USN-1577-1, https://ubuntu.com/security/notices/USN-2036-1, https://ubuntu.com/security/notices/USN-2037-1, https://www.cve.org/CVERecord?id=CVE-2012-2121

    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
    UBUNTU-CVE-2012-2121 | CVE-DB