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avcodec/wavarc: Check k
Fixes: Assertion failure Fixes: 55849/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WAVARC_fuzzer-6590105973555200 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -192,6 +192,8 @@ static int decode_1dif(AVCodecContext *avctx,
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if (block_type < 4 && block_type >= 0) {
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k = 1 + (avctx->sample_fmt == AV_SAMPLE_FMT_S16P);
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k = get_urice(gb, k) + 1;
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if (k > 32)
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return AVERROR_INVALIDDATA;
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}
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switch (block_type) {
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@ -282,6 +284,8 @@ static int decode_2slp(AVCodecContext *avctx,
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if (block_type < 5 && block_type >= 0) {
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k = 1 + (avctx->sample_fmt == AV_SAMPLE_FMT_S16P);
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k = get_urice(gb, k) + 1;
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if (k > 32)
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return AVERROR_INVALIDDATA;
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}
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switch (block_type) {
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