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avcodec/dstdec: Check read_table() for failure

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Fixes: Timeout (too long -> 42sec)
Fixes: 18181/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DST_fuzzer-5736646250594304

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2019-10-15 23:40:21 +02:00
parent 2a8785966c
commit 03ea8d8cd4
1 changed files with 6 additions and 2 deletions
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8
libavcodec/dstdec.c
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@ -302,11 +302,15 @@ static int decode_frame(AVCodecContext *avctx, void *data,
/* Filter Coef Sets (10.12) */ /* Filter Coef Sets (10.12) */
read_table(gb, &s->fsets, fsets_code_pred_coeff, 7, 9, 1, 0); ret = read_table(gb, &s->fsets, fsets_code_pred_coeff, 7, 9, 1, 0);
if (ret < 0)
return ret;
/* Probability Tables (10.13) */ /* Probability Tables (10.13) */
read_table(gb, &s->probs, probs_code_pred_coeff, 6, 7, 0, 1); ret = read_table(gb, &s->probs, probs_code_pred_coeff, 6, 7, 0, 1);
if (ret < 0)
return ret;
/* Arithmetic Coded Data (10.11) */ /* Arithmetic Coded Data (10.11) */