The futex_requeue function in kernel/futex.c in the Linux kernel through 3.14.5 does not ensure that calls have two different futex addresses, which allows local users to gain privileges via a crafted FUTEX_REQUEUE command that facilitates unsafe waiter modification.
https://www.openwall.com/lists/oss-security/2021/02/01/4
https://github.com/torvalds/linux/commit/e9c243a5a6de0be8e584c604d353412584b592f8
https://github.com/elongl/CVE-2014-3153
https://bugzilla.redhat.com/show_bug.cgi?id=1103626
http://www.ubuntu.com/usn/USN-2240-1
http://www.ubuntu.com/usn/USN-2237-1
http://www.openwall.com/lists/oss-security/2021/02/01/4
http://www.openwall.com/lists/oss-security/2014/06/05/22
http://www.exploit-db.com/exploits/35370
http://rhn.redhat.com/errata/RHSA-2014-0800.html
http://openwall.com/lists/oss-security/2014/06/06/20
http://openwall.com/lists/oss-security/2014/06/05/24
http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00007.html
http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00006.html
http://lists.opensuse.org/opensuse-security-announce/2014-07/msg00006.html
http://lists.opensuse.org/opensuse-security-announce/2014-06/msg00025.html
http://lists.opensuse.org/opensuse-security-announce/2014-06/msg00018.html
http://lists.opensuse.org/opensuse-security-announce/2014-06/msg00014.html
http://linux.oracle.com/errata/ELSA-2014-3039.html
http://linux.oracle.com/errata/ELSA-2014-3038.html