x86/AMD: Divide speculative information leak

ISSUE DESCRIPTION In the Zen1 microarchitecure, there is one divider in the pipeline which services uops from both threads. In the case of DE, the latched result from the previous DIV to execute will be forwarded speculatively. This is a covert channel that allows two threads to communicate witho...

OESA-2023-1668 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: An issue was discovered in the Linux kernel through 6.0.9. drivers/media/usb/ttusb-dec/ttusbdec.c has a memory leak because of the lack of a dvbfrontenddetach call.CVE-2022-45887 A division-by-zero error on some AMD processors ca...