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| author | Michael Niedermayer <michaelni@gmx.at> | 2012-04-22 11:10:17 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2012-04-22 11:10:17 +0200 |
| commit | f7c67536fe56336b9c6dcbc87162394c7feb18a5 (patch) | |
| tree | d7bf7d82bae73677fabb96ee061cc7a94c0e8dab | |
| parent | b21ba20cc83c80fe56192fee3626a8087f37d806 (diff) | |
svq1dec: Fix overread on very small input
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavcodec/svq1dec.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/svq1dec.c b/libavcodec/svq1dec.c index e03df08c2d..c36f9fe435 100644 --- a/libavcodec/svq1dec.c +++ b/libavcodec/svq1dec.c @@ -647,6 +647,9 @@ static int svq1_decode_frame(AVCodecContext *avctx, if (s->f_code != 0x20) { uint32_t *src = (uint32_t *) (buf + 4); + if (buf_size < 36) + return AVERROR_INVALIDDATA; + for (i=0; i < 4; i++) { src[i] = ((src[i] << 16) | (src[i] >> 16)) ^ src[7 - i]; } |