QEMU: intel-hda: segmentation fault due to stack overflow

A stack overflow vulnerability was found in the Intel HD Audio device intel-hda of QEMU. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition. The highest threat from this vulnerability is to system availability...

qemu: cirrus: insufficient blit region checks

It was found that the Cirrus blit region checks were insufficient. A privileged guest user could use this flaw to write outside of VRAM-allocated buffer boundaries in the host's QEMU process address space with attacker-provided data...