drivers/infiniband/ulp/srpt/ib_srpt.c in the Linux kernel before 4.5.1 allows local users to cause a denial of service (NULL pointer dereference and system crash) by using an ABORT_TASK command to abort a device write operation.
https://github.com/torvalds/linux/commit/51093254bf879bc9ce96590400a87897c7498463
https://bugzilla.redhat.com/show_bug.cgi?id=1354525
http://www.securityfocus.com/bid/92549
http://www.openwall.com/lists/oss-security/2016/08/19/5
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.1
http://rhn.redhat.com/errata/RHSA-2016-2584.html