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| author | Michael Niedermayer <michaelni@gmx.at> | 2012-04-07 17:25:47 +0200 |
|---|---|---|
| committer | Justin Ruggles <justin.ruggles@gmail.com> | 2012-09-17 14:17:26 -0400 |
| commit | 23aae62c2cb4504a09ceb8cd0cabc1c8b260f521 (patch) | |
| tree | 267c4101a98bc6da31403c15fc66b6cda635c6d9 /libavcodec | |
| parent | e3496e5dbe277e056800ebe7740ac6467d35d5cb (diff) | |
| download | ffmpeg-23aae62c2cb4504a09ceb8cd0cabc1c8b260f521.tar.gz | |
alsdec: Check k used for rice decoder.
Values that fail this check will cause failure of decode_rice()
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/alsdec.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavcodec/alsdec.c b/libavcodec/alsdec.c index 56d7f2faca..ef12253271 100644 --- a/libavcodec/alsdec.c +++ b/libavcodec/alsdec.c @@ -651,6 +651,11 @@ static int read_var_block_data(ALSDecContext *ctx, ALSBlockData *bd) for (k = 1; k < sub_blocks; k++) s[k] = s[k - 1] + decode_rice(gb, 0); } + for (k = 1; k < sub_blocks; k++) + if (s[k] > 32) { + av_log(avctx, AV_LOG_ERROR, "k invalid for rice code.\n"); + return AVERROR_INVALIDDATA; + } if (get_bits1(gb)) *bd->shift_lsbs = get_bits(gb, 4) + 1; |