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| author | Laurent Aimar <fenrir@videolan.org> | 2011-09-24 23:16:17 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2011-09-24 23:42:49 +0200 |
| commit | 00cbe9e4053fd562b6f21e76aca6636ff926b637 (patch) | |
| tree | f48a1bcbfcd07b9910f31612a11b0f91b034a417 /libavcodec/vmdav.c | |
| parent | eae3cf06a5410cf6d06235de4ceea28e33e53be3 (diff) | |
| download | ffmpeg-00cbe9e4053fd562b6f21e76aca6636ff926b637.tar.gz | |
Fix potential overread in vmd audio decoder.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/vmdav.c')
| -rw-r--r-- | libavcodec/vmdav.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libavcodec/vmdav.c b/libavcodec/vmdav.c index 919789168e..77e0432610 100644 --- a/libavcodec/vmdav.c +++ b/libavcodec/vmdav.c @@ -523,7 +523,10 @@ static int vmdaudio_decode_frame(AVCodecContext *avctx, silent_chunks = 0; if (block_type == BLOCK_TYPE_INITIAL) { - uint32_t flags = AV_RB32(buf); + uint32_t flags; + if (buf_size < 4) + return -1; + flags = AV_RB32(buf); silent_chunks = av_popcount(flags); buf += 4; buf_size -= 4; |