The Linux kernel before 3.12.2 does not properly use the get_dumpable function, which allows local users to bypass intended ptrace restrictions or obtain sensitive information from IA64 scratch registers via a crafted application, related to kernel/ptrace.c and arch/ia64/include/asm/processor.h.
https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.54
https://github.com/torvalds/linux/commit/d049f74f2dbe71354d43d393ac3a188947811348
https://bugzilla.redhat.com/show_bug.cgi?id=1028148
https://access.redhat.com/errata/RHSA-2018:1252
http://www.ubuntu.com/usn/USN-2129-1
http://www.ubuntu.com/usn/USN-2128-1
http://www.ubuntu.com/usn/USN-2116-1
http://www.ubuntu.com/usn/USN-2115-1
http://www.ubuntu.com/usn/USN-2114-1
http://www.ubuntu.com/usn/USN-2112-1
http://www.ubuntu.com/usn/USN-2111-1
http://www.ubuntu.com/usn/USN-2110-1
http://www.ubuntu.com/usn/USN-2109-1
http://www.ubuntu.com/usn/USN-2075-1
http://www.ubuntu.com/usn/USN-2070-1
http://www.securityfocus.com/bid/64111
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.12.2
http://rhn.redhat.com/errata/RHSA-2014-0285.html
http://rhn.redhat.com/errata/RHSA-2014-0159.html
http://rhn.redhat.com/errata/RHSA-2014-0100.html
http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html
http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html