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avformat/paf: Check for EOF before allocation in read_header()
Fixes: OOM Fixes: 26584/clusterfuzz-testcase-minimized-ffmpeg_dem_PAF_fuzzer-5172661183053824 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> (cherry picked from commit bcb1e9d3b9b97359e01e5978067c8ee558efa8b4) Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -136,6 +136,10 @@ static int read_header(AVFormatContext *s)
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p->start_offset = avio_rl32(pb);
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p->max_video_blks = avio_rl32(pb);
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p->max_audio_blks = avio_rl32(pb);
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if (avio_feof(pb))
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return AVERROR_INVALIDDATA;
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if (p->buffer_size < 175 ||
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p->max_audio_blks < 2 ||
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p->max_video_blks < 1 ||
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