CVE-2012-4508

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    CVE-2012-4508

    Published: 21 Dec 2012Last Modified: 10 Apr 2026

    Summary:

    Details: Race condition in fs/ext4/extents.c in the Linux kernel before 3.4.16 allows local users to obtain sensitive information from a deleted file by reading an extent that was not properly marked as uninitialized.

    References: http://rhn.redhat.com/errata/RHSA-2012-1540.html, http://rhn.redhat.com/errata/RHSA-2013-0496.html, http://rhn.redhat.com/errata/RHSA-2013-1519.html, http://rhn.redhat.com/errata/RHSA-2013-1783.html, http://www.ubuntu.com/usn/USN-1645-1, http://www.ubuntu.com/usn/USN-1899-1, http://www.ubuntu.com/usn/USN-1900-1, https://github.com/torvalds/linux/commit/dee1f973ca341c266229faa5a1a5bb268bed3531, https://bugzilla.redhat.com/show_bug.cgi?id=869904, http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=dee1f973ca341c266229faa5a1a5bb268bed3531, http://lists.fedoraproject.org/pipermail/package-announce/2012-November/091110.html, http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.4.16, http://www.openwall.com/lists/oss-security/2012/10/25/1, https://www.suse.com/support/update/announcement/2012/suse-su-20121679-1.html

    Affected packages

    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