A memory leak in the predicate_parse() function in kernel/trace/trace_events_filter.c in the Linux kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption), aka CID-96c5c6e6a5b6.
https://usn.ubuntu.com/4226-1/
https://usn.ubuntu.com/4225-2/
https://usn.ubuntu.com/4225-1/
https://security.netapp.com/advisory/ntap-20191205-0001/
https://github.com/torvalds/linux/commit/96c5c6e6a5b6db592acae039fed54b5c8844cd35