mirror of https://git.ffmpeg.org/ffmpeg.git
avformat/wtvdec: Check size in SBE2_STREAM_DESC_EVENT / stream2_guid
Fixes: signed integer overflow: 539033600 - -1910497124 cannot be represented in type 'int' Fixes: 30928/clusterfuzz-testcase-minimized-ffmpeg_dem_WTV_fuzzer-5922630966312960 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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@ -817,6 +817,8 @@ static int parse_chunks(AVFormatContext *s, int mode, int64_t seekts, int *len_p
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avio_skip(pb, 12);
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ff_get_guid(pb, &formattype);
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size = avio_rl32(pb);
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if (size < 0 || size > INT_MAX - 92)
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return AVERROR_INVALIDDATA;
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parse_media_type(s, 0, sid, mediatype, subtype, formattype, size);
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consumed += 92 + size;
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}
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@ -831,6 +833,8 @@ static int parse_chunks(AVFormatContext *s, int mode, int64_t seekts, int *len_p
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avio_skip(pb, 12);
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ff_get_guid(pb, &formattype);
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size = avio_rl32(pb);
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if (size < 0 || size > INT_MAX - 76)
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return AVERROR_INVALIDDATA;
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parse_media_type(s, s->streams[stream_index], sid, mediatype, subtype, formattype, size);
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consumed += 76 + size;
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}
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