There is heap-based buffer overflow in Linux kernel, all versions up to, excluding 5.3, in the marvell wifi chip driver in Linux kernel, that allows local users to cause a denial of service(system crash) or possibly execute arbitrary code.
https://www.openwall.com/lists/oss-security/2019/08/28/1
https://usn.ubuntu.com/4163-2/
https://usn.ubuntu.com/4163-1/
https://usn.ubuntu.com/4162-2/
https://usn.ubuntu.com/4162-1/
https://usn.ubuntu.com/4157-2/
https://usn.ubuntu.com/4157-1/
https://security.netapp.com/advisory/ntap-20191031-0005/
https://seclists.org/bugtraq/2019/Nov/11
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
https://lists.debian.org/debian-lts-announce/2019/09/msg00025.html
https://github.com/torvalds/linux/commit/7caac62ed598a196d6ddf8d9c121e12e082cac3a
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14814
https://access.redhat.com/security/cve/cve-2019-14814
https://access.redhat.com/errata/RHSA-2020:0339
https://access.redhat.com/errata/RHSA-2020:0328
https://access.redhat.com/errata/RHSA-2020:0174
http://www.openwall.com/lists/oss-security/2019/08/28/1
http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html