CVE-2012-6538

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    CVE-2012-6538

    Published: 15 Mar 2013Last Modified: 10 Apr 2026

    Summary:

    Details: The copy_to_user_auth function in net/xfrm/xfrm_user.c in the Linux kernel before 3.6 uses an incorrect C library function for copying a string, which allows local users to obtain sensitive information from kernel heap memory by leveraging the CAP_NET_ADMIN capability.

    References: http://rhn.redhat.com/errata/RHSA-2013-0744.html, https://github.com/torvalds/linux/commit/4c87308bdea31a7b4828a51f6156e6f721a1fcc9, https://www.kernel.org/pub/linux/kernel/v3.x/patch-3.6.bz2, http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=4c87308bdea31a7b4828a51f6156e6f721a1fcc9, http://www.openwall.com/lists/oss-security/2013/03/05/13

    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