num_chunks = bytestream2_get_le16(&g2);
bytestream2_skip(&g2, 8); /* skip padding */
+ if (frame_size < 16)
+ return AVERROR_INVALIDDATA;
+
frame_size -= 16;
/* iterate through the chunks */
while (compressed_lines > 0) {
if (bytestream2_tell(&g2) + 2 > stream_ptr_after_chunk)
break;
+ if (y_ptr > pixel_limit)
+ return AVERROR_INVALIDDATA;
line_packets = bytestream2_get_le16(&g2);
if ((line_packets & 0xC000) == 0xC000) {
// line skip opcode
line_packets = -line_packets;
+ if (line_packets > s->avctx->height)
+ return AVERROR_INVALIDDATA;
y_ptr += line_packets * s->frame->linesize[0];
} else if ((line_packets & 0xC000) == 0x4000) {
av_log(avctx, AV_LOG_ERROR, "Undefined opcode (%x) in DELTA_FLI\n", line_packets);
case FLI_LC:
/* line compressed */
starting_line = bytestream2_get_le16(&g2);
+ if (starting_line >= s->avctx->height)
+ return AVERROR_INVALIDDATA;
y_ptr = 0;
y_ptr += starting_line * s->frame->linesize[0];
if (frame_size > buf_size)
frame_size = buf_size;
+ if (frame_size < 16)
+ return AVERROR_INVALIDDATA;
frame_size -= 16;
/* iterate through the chunks */
while (compressed_lines > 0) {
if (bytestream2_tell(&g2) + 2 > stream_ptr_after_chunk)
break;
+ if (y_ptr > pixel_limit)
+ return AVERROR_INVALIDDATA;
line_packets = bytestream2_get_le16(&g2);
if (line_packets < 0) {
line_packets = -line_packets;
+ if (line_packets > s->avctx->height)
+ return AVERROR_INVALIDDATA;
y_ptr += line_packets * s->frame->linesize[0];
} else {
compressed_lines--;
if (frame_size > buf_size)
frame_size = buf_size;
+ if (frame_size < 16)
+ return AVERROR_INVALIDDATA;
frame_size -= 16;
/* iterate through the chunks */
while (compressed_lines > 0) {
if (bytestream2_tell(&g2) + 2 > stream_ptr_after_chunk)
break;
+ if (y_ptr > pixel_limit)
+ return AVERROR_INVALIDDATA;
line_packets = bytestream2_get_le16(&g2);
if (line_packets < 0) {
line_packets = -line_packets;
+ if (line_packets > s->avctx->height)
+ return AVERROR_INVALIDDATA;
y_ptr += line_packets * s->frame->linesize[0];
} else {
compressed_lines--;