An issue was discovered in the Linux kernel before 5.0.9. There is a use-after-free in atalk_proc_exit, related to net/appletalk/atalk_proc.c, net/appletalk/ddp.c, and net/appletalk/sysctl_net_atalk.c.
lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html
lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html
cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.9
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6377f787aeb945cae7abbb6474798de129e1f3ac
lists.debian.org/debian-lts-announce/2019/09/msg00014.html
lists.debian.org/debian-lts-announce/2019/09/msg00015.html
lists.debian.org/debian-lts-announce/2019/09/msg00025.html
security.netapp.com/advisory/ntap-20190905-0002/
support.f5.com/csp/article/K27112954
support.f5.com/csp/article/K27112954?utm_source=f5support&%3Butm_medium=RSS
usn.ubuntu.com/4115-1/
usn.ubuntu.com/4118-1/