CVE-2013-0914

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    CVE-2013-0914

    Published: 22 Mar 2013Last Modified: 10 Apr 2026

    Summary:

    Details: The flush_signal_handlers function in kernel/signal.c in the Linux kernel before 3.8.4 preserves the value of the sa_restorer field across an exec operation, which makes it easier for local users to bypass the ASLR protection mechanism via a crafted application containing a sigaction system call.

    References: http://rhn.redhat.com/errata/RHSA-2013-1051.html, http://www.mandriva.com/security/advisories?name=MDVSA-2013:176, http://www.ubuntu.com/usn/USN-1787-1, http://www.ubuntu.com/usn/USN-1788-1, http://www.ubuntu.com/usn/USN-1792-1, http://www.ubuntu.com/usn/USN-1793-1, http://www.ubuntu.com/usn/USN-1794-1, http://www.ubuntu.com/usn/USN-1795-1, http://www.ubuntu.com/usn/USN-1796-1, http://www.ubuntu.com/usn/USN-1797-1, http://www.ubuntu.com/usn/USN-1798-1, https://github.com/torvalds/linux/commit/2ca39528c01a933f6689cd6505ce65bd6d68a530, https://bugzilla.redhat.com/show_bug.cgi?id=920499, http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=2ca39528c01a933f6689cd6505ce65bd6d68a530, http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00018.html, http://lists.opensuse.org/opensuse-updates/2013-12/msg00129.html, http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.4, http://www.openwall.com/lists/oss-security/2013/03/11/8

    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-2013-0914 | CVE-DB