In the Linux kernel before 5.2.10, there is a race condition bug that can be caused by a malicious USB device in the USB character device driver layer, aka CID-303911cfc5b9. This affects drivers/usb/core/file.c.
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.10
http://www.openwall.com/lists/oss-security/2019/12/03/4
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html