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| author | Michael Niedermayer <michaelni@gmx.at> | 2012-04-07 17:25:47 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2012-04-07 19:59:00 +0200 |
| commit | 6c3d6a214c6a5b0a7e9c4aa1990d1c5b290806d5 (patch) | |
| tree | 83b6e70d781f48fe72a753767ba214c5dd749c1e /libavcodec/alsdec.c | |
| parent | 192efcf76884f73c3f3d217862ac9e29afc94924 (diff) | |
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>
Diffstat (limited to 'libavcodec/alsdec.c')
| -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 b98473ef5e..ef784dfb56 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] < 0 || s[k] > 32) { + av_log(avctx, AV_LOG_ERROR, "k invalid for rice code.\n"); + return -1; + } if (get_bits1(gb)) *bd->shift_lsbs = get_bits(gb, 4) + 1; |