kernel is vulnerable to denial of service (DoS).It is possible because of brcmfmac frame validation bypass.
access.redhat.com/errata/RHSA-2020:2522
access.redhat.com/security/updates/classification/#important
blog.quarkslab.com/reverse-engineering-broadcom-wireless-chipsets.html
bugzilla.redhat.com/show_bug.cgi?id=1701842
bugzilla.suse.com/show_bug.cgi?id=1132828
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a4176ec356c73a46c07c181c6d04039fafa34a9f
kb.cert.org/vuls/id/166939/
people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-9503.html
security-tracker.debian.org/tracker/CVE-2019-9503