diff options
| -rw-r--r-- | libavcodec/snowdec.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/libavcodec/snowdec.c b/libavcodec/snowdec.c index 0ac0b55012..6eff729a19 100644 --- a/libavcodec/snowdec.c +++ b/libavcodec/snowdec.c @@ -394,9 +394,10 @@ static int decode_header(SnowContext *s){ s->mv_scale += get_symbol(&s->c, s->header_state, 1); s->qbias += get_symbol(&s->c, s->header_state, 1); s->block_max_depth+= get_symbol(&s->c, s->header_state, 1); - if(s->block_max_depth > 1 || s->block_max_depth < 0){ + if(s->block_max_depth > 1 || s->block_max_depth < 0 || s->mv_scale > 256U){ av_log(s->avctx, AV_LOG_ERROR, "block_max_depth= %d is too large\n", s->block_max_depth); s->block_max_depth= 0; + s->mv_scale = 0; return AVERROR_INVALIDDATA; } if (FFABS(s->qbias) > 127) { |