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| author | Michael Niedermayer <michaelni@gmx.at> | 2012-11-13 19:37:47 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2012-11-13 21:45:53 +0100 |
| commit | 3669915e93b3df63034857534245c3f2575d78ff (patch) | |
| tree | 24bc4bd94531acad73741f3d5bc60681c90071d6 | |
| parent | 41ebbb3b0462182a87f610fe6a48c6ed8acf5cd7 (diff) | |
| download | ffmpeg-3669915e93b3df63034857534245c3f2575d78ff.tar.gz | |
dvdec: check ipcm more completely, avoid assert failure.
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavformat/dv.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavformat/dv.c b/libavformat/dv.c index f3d88e457c..a04735ac25 100644 --- a/libavformat/dv.c +++ b/libavformat/dv.c @@ -142,6 +142,11 @@ static int dv_extract_audio(uint8_t* frame, uint8_t* ppcm[4], * channels 0,1 and odd 2,3. */ ipcm = (sys->height == 720 && !(frame[1] & 0x0C)) ? 2 : 0; + if (ipcm + sys->n_difchan > (quant == 1 ? 2 : 4)) { + av_log(NULL, AV_LOG_ERROR, "too many dv pcm frames\n"); + return AVERROR_INVALIDDATA; + } + /* for each DIF channel */ for (chan = 0; chan < sys->n_difchan; chan++) { av_assert0(ipcm<4); |