Use-after-free vulnerability in the __sys_recvmmsg function in net/socket.c in the Linux kernel before 4.5.2 allows remote attackers to execute arbitrary code via vectors involving a recvmmsg system call that is mishandled during error processing.
http://rhn.redhat.com/errata/RHSA-2016-2962.html
http://rhn.redhat.com/errata/RHSA-2017-0031.html
http://rhn.redhat.com/errata/RHSA-2017-0036.html
http://rhn.redhat.com/errata/RHSA-2017-0065.html
http://rhn.redhat.com/errata/RHSA-2017-0086.html
http://rhn.redhat.com/errata/RHSA-2017-0091.html
http://rhn.redhat.com/errata/RHSA-2017-0113.html
http://rhn.redhat.com/errata/RHSA-2017-0196.html
http://rhn.redhat.com/errata/RHSA-2017-0215.html
http://rhn.redhat.com/errata/RHSA-2017-0216.html
http://rhn.redhat.com/errata/RHSA-2017-0217.html
http://rhn.redhat.com/errata/RHSA-2017-0270.html
https://bugzilla.novell.com/show_bug.cgi?id=1003077
https://bugzilla.redhat.com/show_bug.cgi?id=1382268
https://github.com/torvalds/linux/commit/34b88a68f26a75e4fded796f1a49c40f82234b7d