CVE-2019-3882: Linux kernel: DoS through vfio/type1 DMA mappings

[Vladis Dronov <vdronov () redhat com>]

Heololo,

A flaw was found in the Linux kernel's vfio interface implementation that permits
violation of the user's locked memory limit. If a device is bound to a vfio driver,
such as vfio-pci, and the local attacker is administratively granted ownership of
the device, it may cause a system memory exhaustion and thus a denial of service (DoS).

CVE-2019-3882 was allocated for this flaw.

References:

https://lore.kernel.org/lkml/155414977872.12780.13728555131525362206.stgit () gimli home/T/#u

https://bugzilla.redhat.com/show_bug.cgi?id=1689426

Best regards,
Vladis Dronov | Red Hat, Inc. | Product Security | Senior Software Engineer