ati-vga in hw/display/ati.c in QEMU 4.2.0 allows guest OS users to trigger infinite recursion via a crafted mm_index value during an ati_mm_read or ati_mm_write call. CREATE(Triage):(User=admin) [CVE-2020-13800|https://nvd.nist.gov/vuln/detail/CVE-2020-13800]