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H A D | hcd-dwc2.c | bea2a9e3 Thu Oct 15 02:59:57 CDT 2020 Mauro Matteo Cascella <mcascell@redhat.com> hw/usb/hcd-dwc2: fix divide-by-zero in dwc2_handle_packet() Check the value of mps to avoid potential divide-by-zero later in the function. Since HCCHAR_MPS is guest controllable, this prevents a malicious/buggy guest from crashing the QEMU process on the host. Signed-off-by: Mauro Matteo Cascella <mcascell@redhat.com> Reviewed-by: Paul Zimmerman <pauldzim@gmail.com> Reported-by: Gaoning Pan <gaoning.pgn@antgroup.com> Reported-by: Xingwei Lin <linyi.lxw@antfin.com> Message-id: 20201015075957.268823-1-mcascell@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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