diff options
| author | Michael Niedermayer <michaelni@gmx.at> | 2012-04-22 03:47:53 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2012-04-22 03:49:13 +0200 |
| commit | b21ba20cc83c80fe56192fee3626a8087f37d806 (patch) | |
| tree | 1332323f8aab80ef0827fcd263428d870db6c7ee /libavcodec | |
| parent | c047afb80c7373c8533f5aeff6413015a814faaf (diff) | |
| download | ffmpeg-b21ba20cc83c80fe56192fee3626a8087f37d806.tar.gz | |
wmaprodec: tighter check for num_vec_coeffs
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/wmaprodec.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/libavcodec/wmaprodec.c b/libavcodec/wmaprodec.c index 8e7ef4cabd..8ed87f5e75 100644 --- a/libavcodec/wmaprodec.c +++ b/libavcodec/wmaprodec.c @@ -1166,6 +1166,7 @@ static int decode_subframe(WMAProDecodeCtx *s) transmit_coeffs = 1; } + av_assert0(s->subframe_len <= WMAPRO_BLOCK_MAX_SIZE); if (transmit_coeffs) { int step; int quant_step = 90 * s->bits_per_sample >> 4; @@ -1176,7 +1177,7 @@ static int decode_subframe(WMAProDecodeCtx *s) for (i = 0; i < s->channels_for_cur_subframe; i++) { int c = s->channel_indexes_for_cur_subframe[i]; int num_vec_coeffs = get_bits(&s->gb, num_bits) << 2; - if (num_vec_coeffs > WMAPRO_BLOCK_MAX_SIZE) { + if (num_vec_coeffs > s->subframe_len) { av_log(s->avctx, AV_LOG_ERROR, "num_vec_coeffs %d is too large\n", num_vec_coeffs); return AVERROR_INVALIDDATA; } |