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| author | Michael Niedermayer <michaelni@gmx.at> | 2013-07-09 14:01:13 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2013-07-09 15:32:21 +0200 |
| commit | 7d9cb126893d56ea7b4e1cf4715a7c5e6dc66ad6 (patch) | |
| tree | e42e6230e0febb0784fa8ff9c9c46df9bca24c1f | |
| parent | 694550f18e026c1d7736a40961d080ec32a4c31b (diff) | |
| download | ffmpeg-7d9cb126893d56ea7b4e1cf4715a7c5e6dc66ad6.tar.gz | |
avcodec/wmaprodec: Check block_align
Fixes undefined behavior
Its not known if this condition can be triggered through crafted input.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavcodec/wmaprodec.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavcodec/wmaprodec.c b/libavcodec/wmaprodec.c index c4e0b0af63..ca57f64cda 100644 --- a/libavcodec/wmaprodec.c +++ b/libavcodec/wmaprodec.c @@ -306,6 +306,10 @@ static av_cold int decode_init(AVCodecContext *avctx) /** generic init */ s->log2_frame_size = av_log2(avctx->block_align) + 4; + if (s->log2_frame_size > 25) { + avpriv_request_sample(avctx, "Large block align"); + return AVERROR_PATCHWELCOME; + } /** frame info */ s->skip_frame = 1; /* skip first frame */ |