CVE-2013-4247

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    CVE-2013-4247

    Published: 25 Aug 2013Last Modified: 10 Apr 2026

    Summary:

    Details: Off-by-one error in the build_unc_path_to_root function in fs/cifs/connect.c in the Linux kernel before 3.9.6 allows remote attackers to cause a denial of service (memory corruption and system crash) via a DFS share mount operation that triggers use of an unexpected DFS referral name length.

    References: http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.9.6, http://www.openwall.com/lists/oss-security/2013/08/14/10, https://bugzilla.redhat.com/show_bug.cgi?id=998401, https://github.com/torvalds/linux/commit/1fc29bacedeabb278080e31bb9c1ecb49f143c3b, http://www.openwall.com/lists/oss-security/2013/08/14/10, https://github.com/torvalds/linux/commit/1fc29bacedeabb278080e31bb9c1ecb49f143c3b, https://github.com/torvalds/linux/commit/1fc29bacedeabb278080e31bb9c1ecb49f143c3b, https://bugzilla.redhat.com/show_bug.cgi?id=998401, http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1fc29bacedeabb278080e31bb9c1ecb49f143c3b

    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