Module: libav Branch: master Commit: 23aae62c2cb4504a09ceb8cd0cabc1c8b260f521
Author: Michael Niedermayer <[email protected]> Committer: Justin Ruggles <[email protected]> Date: Sat Apr 7 17:25:47 2012 +0200 alsdec: Check k used for rice decoder. Values that fail this check will cause failure of decode_rice() Signed-off-by: Michael Niedermayer <[email protected]> Signed-off-by: Justin Ruggles <[email protected]> --- libavcodec/alsdec.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/libavcodec/alsdec.c b/libavcodec/alsdec.c index 56d7f2f..ef12253 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; _______________________________________________ libav-commits mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-commits
