In the Linux kernel before 5.2.9, there is an info-leak bug that can be caused by a malicious USB device in the drivers/net/can/usb/peak_usb/pcan_usb_fd.c driver, aka CID-30a8beeb3042.
https://www.oracle.com/security-alerts/cpuApr2021.html
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.9
http://www.openwall.com/lists/oss-security/2019/12/03/4
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html