The trace_writeback_dirty_page implementation in include/trace/events/writeback.h in the Linux kernel before 4.4 improperly interacts with mm/migrate.c, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by triggering a certain page move.
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=42cb14b110a5698ccf26ce59c4441722605a3743
rhn.redhat.com/errata/RHSA-2016-2574.html
rhn.redhat.com/errata/RHSA-2016-2584.html
www.debian.org/security/2016/dsa-3607
www.securityfocus.com/bid/90518
www.ubuntu.com/usn/USN-3034-1
www.ubuntu.com/usn/USN-3034-2
www.ubuntu.com/usn/USN-3035-1
www.ubuntu.com/usn/USN-3035-2
www.ubuntu.com/usn/USN-3035-3
www.ubuntu.com/usn/USN-3036-1
www.ubuntu.com/usn/USN-3037-1
bugzilla.redhat.com/show_bug.cgi?id=1308846
github.com/torvalds/linux/commit/42cb14b110a5698ccf26ce59c4441722605a3743
security-tracker.debian.org/tracker/CVE-2016-3070