An issue was discovered in the Linux kernel before 5.0.19. The XFRM subsystem has a use-after-free, related to an xfrm_state_fini panic, aka CID-dbb2483b2a46.
https://security.netapp.com/advisory/ntap-20210720-0003/
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.19