diff options
author | Gerd Hoffmann <kraxel@redhat.com> | 2015-09-29 09:58:05 +0200 |
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committer | Gerd Hoffmann <kraxel@redhat.com> | 2015-10-20 09:26:36 +0200 |
commit | 5829b097204189c56dd1fb62c7f827360394bb39 (patch) | |
tree | 6dfd33e95adb029980b31f71dfdf0c02ba94d14f | |
parent | b798c1905705e6ab44279d8a9ae41e500756eb1c (diff) | |
download | hqemu-5829b097204189c56dd1fb62c7f827360394bb39.zip hqemu-5829b097204189c56dd1fb62c7f827360394bb39.tar.gz |
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>
-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 8e93509..9354037 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; } |