check_input_term in sound/usb/mixer.c in the Linux kernel through 5.2.9 mishandles recursion, leading to kernel stack exhaustion.
https://www.debian.org/security/2019/dsa-4531
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/4147-1/
https://security.netapp.com/advisory/ntap-20190905-0002/
https://seclists.org/bugtraq/2019/Sep/41
https://seclists.org/bugtraq/2019/Nov/11
https://lore.kernel.org/lkml/20190815043554.16623-1-benquike%40gmail.com/
https://lists.debian.org/debian-lts-announce/2019/10/msg00000.html
https://lists.debian.org/debian-lts-announce/2019/09/msg00025.html
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html