linux is vulnerable to denial of service (DoS). The vulnerability exists through a memory leak if PERF_EVENT_IOC_SET_FILTER
is used.
bugzilla.redhat.com/show_bug.cgi?id=1895961
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7bdb157cdebbf95a1cd94ed2e01b338714075d00
git.launchpad.net/ubuntu-cve-tracker/tree/active/CVE-2020-25704
lists.debian.org/debian-lts-announce/2020/12/msg00015.html
lists.debian.org/debian-lts-announce/2020/12/msg00027.html
www.openwall.com/lists/oss-security/2020/11/09/1