UBUNTU-CVE-2011-4086

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    UBUNTU-CVE-2011-4086

    Published: 9 Feb 2012Last Modified: 4 Feb 2026
    Upstream:
    CVE-2011-4086
    Aliases:
    USN-1431-1
    USN-1432-1
    USN-1433-1

    Summary:

    Details: The journal_unmap_buffer function in fs/jbd2/transaction.c in the Linux kernel before 3.3.1 does not properly handle the _Delay and _Unwritten buffer head states, which allows local users to cause a denial of service (system crash) by leveraging the presence of an ext4 filesystem that was mounted with a journal.

    References: https://ubuntu.com/security/CVE-2011-4086, https://rhn.redhat.com/errata/RHSA-2012-0107.html, http://thread.gmane.org/gmane.comp.file-systems.ext4/30623, https://ubuntu.com/security/notices/USN-1431-1, https://ubuntu.com/security/notices/USN-1433-1, https://ubuntu.com/security/notices/USN-1432-1, https://ubuntu.com/security/notices/USN-1440-1, https://ubuntu.com/security/notices/USN-1445-1, https://ubuntu.com/security/notices/USN-1446-1, https://ubuntu.com/security/notices/USN-1453-1, https://ubuntu.com/security/notices/USN-1454-1, https://ubuntu.com/security/notices/USN-1458-1, https://www.cve.org/CVERecord?id=CVE-2011-4086

    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