In QEMU through 5.0.0, an integer overflow was found in the SM501 display driver implementation. This flaw occurs in the COPYAREA macro while handling MMIO write operations through the sm5012denginewrite() callback. A local attacker could abuse this flaw to crash the QEMU process in sm5012doperation() in hw/display/sm501.c on the host, resulting in a denial of service.
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