Fixes: out of array access
Fixes: 21469/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_G2M_fuzzer-5199357982015488
Alternatively the arrays can be made bigger or the index can be clipped.
In case a real file with such huge tiles exist we ask the user to upload it.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
awidth = FFALIGN(tile_width, 16);
aheight = FFALIGN(tile_height, 16);
+ if (tile_width > (1 << FF_ARRAY_ELEMS(c->ec.prev_row_rung))) {
+ avpriv_request_sample(avctx, "large tile width");
+ return AVERROR_INVALIDDATA;
+ }
+
if (els_dsize) {
int ret, i, j, k;
uint8_t tr_r, tr_g, tr_b, *buf;