UBUNTU-CVE-2012-6647

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    UBUNTU-CVE-2012-6647

    Published: 26 May 2014Last Modified: 4 Feb 2026
    Upstream:
    CVE-2012-6647
    Aliases:
    USN-1579-1
    USN-1580-1
    USN-1651-1

    Summary:

    Details: The futex_wait_requeue_pi function in kernel/futex.c in the Linux kernel before 3.5.1 does not ensure that calls have two different futex addresses, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted FUTEX_WAIT_REQUEUE_PI command.

    References: https://ubuntu.com/security/CVE-2012-6647, https://ubuntu.com/security/notices/USN-1580-1, https://ubuntu.com/security/notices/USN-1651-1, https://ubuntu.com/security/notices/USN-1579-1, https://ubuntu.com/security/notices/USN-1653-1, https://www.cve.org/CVERecord?id=CVE-2012-6647

    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