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avcodec/aac/aacdec_lpd: Check kv indec

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Fixes: index 9 out of bounds for type 'uint32_t [8][8]'
Fixes: 70363/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_AAC_LATM_fuzzer-6723855293415424.fuzz

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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Michael Niedermayer 2024-07-19 22:22:33 +02:00
parent ae20be8b5d
commit 2f7aaa33e7
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1 changed files with 3 additions and 0 deletions
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libavcodec/aac/aacdec_lpd.c
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@ -130,6 +130,9 @@ int ff_aac_parse_fac_data(AACUsacElemData *ce, GetBitContext *gb,
if (use_gain)
ce->fac.gain = get_bits(gb, 7);
if (len/8 > 8)
return AVERROR_PATCHWELCOME;
for (int i = 0; i < len/8; i++) {
ret = parse_codebook_idx(gb, ce->fac.kv[i], 1, 1);
if (ret < 0)