CVE-2013-1792 Information

Description

Race condition in the install_user_keyrings function in security/keys/process_keys.c in the Linux kernel before 3.8.3 allows local users to cause a denial of service (NULL pointer dereference and system crash) via crafted keyctl system calls that trigger keyring operations in simultaneous threads.

Reference

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=0da9dfdd2cd9889201bc6f6f43580c99165cd087 http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00018.html http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00002.html http://rhn.redhat.com/errata/RHSA-2013-0744.html http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.3 http://www.mandriva.com/security/advisories?name=MDVSA-2013:176 http://www.openwall.com/lists/oss-security/2013/03/07/1 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://bugzilla.redhat.com/show_bug.cgi?id=916646 https://github.com/torvalds/linux/commit/0da9dfdd2cd9889201bc6f6f43580c99165cd087