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indeo4: fix out-of-bounds function call.

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Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org

Signed-off-by: Kostya Shishkov <kostya.shishkov@gmail.com>
This commit is contained in:
Ronald S. Bultje 2012-03-21 10:39:10 -07:00 committed by Kostya Shishkov
parent 3b327a4b42
commit 68fd077f68
1 changed files with 2 additions and 1 deletions
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3
libavcodec/indeo4.c
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@ -372,7 +372,8 @@ static int decode_band_hdr(IVI4DecContext *ctx, IVIBandDesc *band,
if (!get_bits1(&ctx->gb) || ctx->frame_type == FRAMETYPE_INTRA) {
transform_id = get_bits(&ctx->gb, 5);
if (!transforms[transform_id].inv_trans) {
if (transform_id >= FF_ARRAY_ELEMS(transforms) ||
!transforms[transform_id].inv_trans) {
av_log_ask_for_sample(avctx, "Unimplemented transform: %d!\n", transform_id);
return AVERROR_PATCHWELCOME;
}