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| author | Michael Niedermayer <michaelni@gmx.at> | 2011-04-25 16:16:44 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2011-04-26 02:44:33 +0200 |
| commit | 7157334c375b7623dd52314d45cef3700896d0fe (patch) | |
| tree | 03c278ba0fd69eb539db810be3d8132c75bce19a /libavcodec | |
| parent | 1da254b849d9bc8cc100afde86b225d467857a11 (diff) | |
| download | ffmpeg-7157334c375b7623dd52314d45cef3700896d0fe.tar.gz | |
wmadec: prevent null pointer call.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/wmadec.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavcodec/wmadec.c b/libavcodec/wmadec.c index 5382999cb0..fa20bea1e0 100644 --- a/libavcodec/wmadec.c +++ b/libavcodec/wmadec.c @@ -489,6 +489,11 @@ static int wma_decode_block(WMACodecContext *s) s->block_len_bits = s->frame_len_bits; } + if (s->frame_len_bits - s->block_len_bits >= s->nb_block_sizes){ + av_log(s->avctx, AV_LOG_ERROR, "block_len_bits not initialized to a valid value\n"); + return -1; + } + /* now check if the block length is coherent with the frame length */ s->block_len = 1 << s->block_len_bits; if ((s->block_pos + s->block_len) > s->frame_len){ |