CVE-2019-7222

Source
Severity Medium
Remote No
Type Information disclosure
Description
An information leakage issue was found in the way Linux kernel's KVM hypervisor handled page fault exceptions while emulating instructions like VMXON, VMCLEAR, VMPTRLD, and VMWRITE with memory address as an operand. It occurs if the operand is a mmio address, as the returned exception object holds uninitialized stack memory contents. A guest user/process could use this flaw to leak host's stack memory contents to a guest.
Group Package Affected Fixed Severity Status Ticket
AVG-850 linux 4.20.arch1-1 4.20.8.arch1-1 Critical Fixed
References
https://bugs.chromium.org/p/project-zero/issues/detail?id=1759
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=353c0956a618a07ba4bbe7ad00ff29fe70e8412a