CVE-2013-2140

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    CVE-2013-2140

    Published: 25 Sept 2013Last Modified: 16 Apr 2026

    Summary:

    Details: The dispatch_discard_io function in drivers/block/xen-blkback/blkback.c in the Xen blkback implementation in the Linux kernel before 3.10.5 allows guest OS users to cause a denial of service (data loss) via filesystem write operations on a read-only disk that supports the (1) BLKIF_OP_DISCARD (aka discard or TRIM) or (2) SCSI UNMAP feature.

    References: http://www.ubuntu.com/usn/USN-1938-1, http://www.ubuntu.com/usn/USN-1943-1, http://www.ubuntu.com/usn/USN-1944-1, http://www.ubuntu.com/usn/USN-1945-1, http://www.ubuntu.com/usn/USN-1946-1, http://www.ubuntu.com/usn/USN-1947-1, http://www.ubuntu.com/usn/USN-2038-1, http://www.ubuntu.com/usn/USN-2039-1, https://github.com/torvalds/linux/commit/604c499cbbcc3d5fe5fb8d53306aa0fae1990109, https://github.com/torvalds/linux/commit/604c499cbbcc3d5fe5fb8d53306aa0fae1990109, https://bugzilla.redhat.com/show_bug.cgi?id=971146, http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=604c499cbbcc3d5fe5fb8d53306aa0fae1990109, http://people.canonical.com/~ubuntu-security/cve/2013/CVE-2013-2140.html, http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.10.5, http://www.openwall.com/lists/oss-security/2013/06/05/21

    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
    CVE-2013-2140 | CVE-DB