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indeo3: check per-plane data buffer against input buffer bounds. 

Fixes : http://bugzilla.libav.org/show_bug.cgi?id=102

Signed-off-by: Alex Converse <alex.converse@gmail.com>
This commit is contained in:
Aneesh Dogra 2011-11-29 23:13:35 +05:30 committed by Alex Converse
parent fdab793a46
commit 464ccb0144
1 changed files with 3 additions and 1 deletions
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4
libavcodec/indeo3.c
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@ -804,8 +804,10 @@ static int decode_plane(Indeo3DecodeContext *ctx, AVCodecContext *avctx,
num_vectors = bytestream_get_le32(&data);
ctx->mc_vectors = num_vectors ? data : 0;
if (num_vectors * 2 >= data_size)
return AVERROR_INVALIDDATA;
/* init the bitreader */
init_get_bits(&ctx->gb, &data[num_vectors * 2], data_size << 3);
init_get_bits(&ctx->gb, &data[num_vectors * 2], (data_size - num_vectors * 2) << 3);
ctx->skip_bits = 0;
ctx->need_resync = 0;