An issue was discovered in the Linux kernel through 5.3.9. There is a use-after-free when aa_label_parse() fails in aa_audit_rule_init() in security/apparmor/audit.c.
https://support.f5.com/csp/article/K21561554?utm_source=f5support&%3Butm_medium=RSS
https://security.netapp.com/advisory/ntap-20191205-0001/
https://lore.kernel.org/patchwork/patch/1142523/
https://lists.debian.org/debian-lts-announce/2020/08/msg00019.html