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avcodec/aac/aacdec_usac: Dont leave invalid max_sfb in the context

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Fixes: out of array read
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 22:20:46 +02:00
parent d52fabaec0
commit ae20be8b5d
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1 changed files with 1 additions and 0 deletions
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libavcodec/aac/aacdec_usac.c
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@ -834,6 +834,7 @@ static int setup_sce(AACDecContext *ac, SingleChannelElement *sce,
"Number of scalefactor bands in group (%d) "
"exceeds limit (%d).\n",
ics->max_sfb, ics->num_swb);
ics->max_sfb = 0;
return AVERROR(EINVAL);
}