CVE-2020-11869

Name of the Vulnerable Software and Affected Versions QEMU versions 4.0.1 through 4.2.0

Description An integer overflow was found in the way QEMU implemented ATI VGA emulation. This flaw occurs in the ati 2d blt() routine in hw/display/ati-2d.c while handling MMIO write operations through the ati mm write() callback. A malicious guest could abuse this flaw to crash the QEMU process, resulting in a denial of service.

Recommendations For QEMU versions 4.0.1 through 4.2.0, consider disabling the ati 2d blt() function or restricting MMIO write operations through the ati mm write() callback as a temporary workaround to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.