A memory leak in the crypto_reportstat() function in drivers/virt/vboxguest/vboxguest_utils.c in the Linux kernel before 5.3.9 allows attackers to cause a denial of service (memory consumption) by triggering copy_form_user() failures, aka CID-e0b0cb938864.
https://usn.ubuntu.com/4226-1/
https://usn.ubuntu.com/4208-1/
https://security.netapp.com/advisory/ntap-20191205-0001/
https://github.com/torvalds/linux/commit/e0b0cb9388642c104838fac100a4af32745621e2
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.9