UBUNTU-CVE-2011-2491

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    UBUNTU-CVE-2011-2491

    Published: 6 Oct 2011Last Modified: 4 Feb 2026
    Upstream:
    CVE-2011-2491
    Aliases:
    USN-1244-1
    USN-1268-1
    USN-1269-1

    Summary:

    Details: The Network Lock Manager (NLM) protocol implementation in the NFS client functionality in the Linux kernel before 3.0 allows local users to cause a denial of service (system hang) via a LOCK_UN flock system call.

    References: https://ubuntu.com/security/CVE-2011-2491, https://rhn.redhat.com/errata/RHSA-2011-1212.html, https://ubuntu.com/security/notices/USN-1244-1, https://ubuntu.com/security/notices/USN-1268-1, https://ubuntu.com/security/notices/USN-1269-1, https://ubuntu.com/security/notices/USN-1272-1, https://ubuntu.com/security/notices/USN-1271-1, https://ubuntu.com/security/notices/USN-1274-1, https://ubuntu.com/security/notices/USN-1278-1, https://ubuntu.com/security/notices/USN-1279-1, https://ubuntu.com/security/notices/USN-1281-1, https://ubuntu.com/security/notices/USN-1285-1, https://ubuntu.com/security/notices/USN-1286-1, https://www.cve.org/CVERecord?id=CVE-2011-2491

    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