From: Mauro Matteo Cascella <mcasc...@redhat.com> Check rext.info to avoid potential NULL pointer dereference. A similar check exists in interface_release_resource() in hw/display/qxl.c.
Reported-by: Yu Lu <ini.unive...@gmail.com> Signed-off-by: Mauro Matteo Cascella <mcasc...@redhat.com> Reviewed-by: Prasad J Pandit <p...@fedoraproject.org> Message-Id: <20210520105833.183160-1-mcasc...@redhat.com> Signed-off-by: Gerd Hoffmann <kra...@redhat.com> --- ui/spice-display.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/ui/spice-display.c b/ui/spice-display.c index d22781a23d06..f59c69882d91 100644 --- a/ui/spice-display.c +++ b/ui/spice-display.c @@ -561,6 +561,10 @@ static void interface_release_resource(QXLInstance *sin, SimpleSpiceCursor *cursor; QXLCommandExt *ext; + if (!rext.info) { + return; + } + ext = (void *)(intptr_t)(rext.info->id); switch (ext->cmd.type) { case QXL_CMD_DRAW: -- 2.31.1