diff options
| author | Gerd Hoffmann | 2015-09-29 09:58:05 +0200 |
|---|---|---|
| committer | Gerd Hoffmann | 2015-10-20 09:26:36 +0200 |
| commit | 5829b097204189c56dd1fb62c7f827360394bb39 (patch) | |
| tree | 6dfd33e95adb029980b31f71dfdf0c02ba94d14f /hw/display/vmware_vga.c | |
| parent | ppc/spapr: Allow VIRTIO_VGA (diff) | |
| download | qemu-5829b097204189c56dd1fb62c7f827360394bb39.tar.gz qemu-5829b097204189c56dd1fb62c7f827360394bb39.tar.xz qemu-5829b097204189c56dd1fb62c7f827360394bb39.zip | |
vmsvga: more cursor checks
Check the cursor size more carefully. Also switch to unsigned while
being at it, so they can't be negative.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'hw/display/vmware_vga.c')
| -rw-r--r-- | hw/display/vmware_vga.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/hw/display/vmware_vga.c b/hw/display/vmware_vga.c index 8e9350981c..9354037852 100644 --- a/hw/display/vmware_vga.c +++ b/hw/display/vmware_vga.c @@ -488,10 +488,10 @@ static inline int vmsvga_fill_rect(struct vmsvga_state_s *s, #endif struct vmsvga_cursor_definition_s { - int width; - int height; + uint32_t width; + uint32_t height; int id; - int bpp; + uint32_t bpp; int hot_x; int hot_y; uint32_t mask[1024]; @@ -658,7 +658,10 @@ static void vmsvga_fifo_run(struct vmsvga_state_s *s) cursor.bpp = vmsvga_fifo_read(s); args = SVGA_BITMAP_SIZE(x, y) + SVGA_PIXMAP_SIZE(x, y, cursor.bpp); - if (SVGA_BITMAP_SIZE(x, y) > sizeof cursor.mask || + if (cursor.width > 256 || + cursor.height > 256 || + cursor.bpp > 32 || + SVGA_BITMAP_SIZE(x, y) > sizeof cursor.mask || SVGA_PIXMAP_SIZE(x, y, cursor.bpp) > sizeof cursor.image) { goto badcmd; } |