An issue was discovered in the Linux kernel before 5.0.9. There is a NULL pointer dereference for a pf data structure if alloc_disk fails in drivers/block/paride/pf.c.
https://security.netapp.com/advisory/ntap-20191004-0001/
https://github.com/torvalds/linux/commit/58ccd2d31e502c37e108b285bf3d343eb00c235b
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.9