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    CVE-2012-2121

    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.

    Published:Mar 29, 2012
    Last Modified:Apr 11, 2025
    EPS:May 17, 2012
    EPSS Score:0.00127
    CVSS Score:4.9

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel Virtualization

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    http://rhn.redhat.com/errata/RHSA-2012-0676.html
    http://rhn.redhat.com/errata/RHSA-2012-0743.html
    http://secunia.com/advisories/50732
    http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.4
    http://www.openwall.com/lists/oss-security/2012/04/19/16
    http://www.securitytracker.com/id?1027083
    http://www.ubuntu.com/usn/USN-1577-1
    http://www.ubuntu.com/usn/USN-2036-1
    http://www.ubuntu.com/usn/USN-2037-1
    https://bugzilla.redhat.com/show_bug.cgi?id=814149
    https://github.com/torvalds/linux/commit/09ca8e1173bcb12e2a449698c9ae3b86a8a10195
    http://rhn.redhat.com/errata/RHSA-2012-0676.html
    http://rhn.redhat.com/errata/RHSA-2012-0743.html
    http://secunia.com/advisories/50732
    http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.4
    http://www.openwall.com/lists/oss-security/2012/04/19/16
    http://www.securitytracker.com/id?1027083
    http://www.ubuntu.com/usn/USN-1577-1
    http://www.ubuntu.com/usn/USN-2036-1
    http://www.ubuntu.com/usn/USN-2037-1
    https://bugzilla.redhat.com/show_bug.cgi?id=814149
    https://github.com/torvalds/linux/commit/09ca8e1173bcb12e2a449698c9ae3b86a8a10195

    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