Imagine a nbox that was (UINT_MAX + small number) / (4 * 2 *
sizeof(float)). We'd malloc a few bytes after the integer overflow,
but glamor_set_normalize_vcoords would write over gigabytes of heap.
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Markus Wick <markus@selfnet.de>
pixmap_priv_get_dest_scale(pixmap_priv, &xscale, &yscale);
- if (nbox * 4 * 2 > ARRAY_SIZE(vertices)) {
+ if (nbox > valid_nbox) {
int allocated_box;
- if (nbox * 6 > GLAMOR_COMPOSITE_VBO_VERT_CNT) {
+ if (nbox > GLAMOR_COMPOSITE_VBO_VERT_CNT / 6) {
allocated_box = GLAMOR_COMPOSITE_VBO_VERT_CNT / 6;
}
else