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avformat/nistspheredec: Check bps

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Fixes: left shift of 1111111190 by 3 places cannot be represented in type 'int'
Fixes: 26437/clusterfuzz-testcase-minimized-ffmpeg_dem_NISTSPHERE_fuzzer-4886896091856896

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 2020-10-19 10:53:31 +02:00
parent 715ff75e5d
commit 7c144b363e
1 changed files with 2 additions and 0 deletions
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libavformat/nistspheredec.c
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@ -109,6 +109,8 @@ static int nist_read_header(AVFormatContext *s)
sscanf(buffer, "%*s %*s %"SCNd64, &st->duration);
} else if (!memcmp(buffer, "sample_n_bytes", 14)) {
sscanf(buffer, "%*s %*s %d", &bps);
if (bps > INT_MAX/8U)
return AVERROR_INVALIDDATA;
} else if (!memcmp(buffer, "sample_rate", 11)) {
sscanf(buffer, "%*s %*s %d", &st->codecpar->sample_rate);
} else if (!memcmp(buffer, "sample_sig_bits", 15)) {