Acked-by: Hans de Goede <hdego...@redhat.com> On 07/29/2012 11:55 AM, Alon Levy wrote:
Signed-off-by: Alon Levy <al...@redhat.com> --- hw/qxl.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)diff --git a/hw/qxl.c b/hw/qxl.c index 92e985b..5278541 100644 --- a/hw/qxl.c +++ b/hw/qxl.c @@ -1405,6 +1405,18 @@ async_common: QXLCookie *cookie = NULL; QXLRect update = d->ram->update_area; + if (d->ram->update_surface > NUM_SURFACES) { + qxl_set_guest_bug(d, "QXL_IO_UPDATE_AREA: invalid surface id %d\n", + d->ram->update_surface); + return; + } + if (update.left >= update.right || update.top >= update.bottom) { + qxl_set_guest_bug(d, + "QXL_IO_UPDATE_AREA: invalid area (%ux%u)x(%ux%u)\n", + update.left, update.top, update.right, update.bottom); + return; + } + if (async == QXL_ASYNC) { cookie = qxl_cookie_new(QXL_COOKIE_TYPE_IO, QXL_IO_UPDATE_AREA_ASYNC);
