Add a check in flic_decode_frame_8BPP(), in case chunk_size is >
frame_size issue a warning and resize chunk_size to frame_size, in
order to avoid out-of-buffer reads.
Fix roundup issue #2520, trac issue #69.
Signed-off-by: Stefano Sabatini <stefano.sabatini-lala@poste.it>
/* iterate through the chunks */
while ((frame_size > 0) && (num_chunks > 0)) {
chunk_size = AV_RL32(&buf[stream_ptr]);
+ if (chunk_size > frame_size) {
+ av_log(avctx, AV_LOG_WARNING,
+ "Invalid chunk_size = %u > frame_size = %u\n", chunk_size, frame_size);
+ chunk_size = frame_size;
+ }
stream_ptr += 4;
chunk_type = AV_RL16(&buf[stream_ptr]);
stream_ptr += 2;