mirror of https://git.videolan.org/git/ffmpeg.git
avformat/wtvdec: Check len in parse_chunks() to avoid overflow
Fixes: signed integer overflow: 2147483647 + 7 cannot be represented in type 'int'
Fixes: 30084/clusterfuzz-testcase-minimized-ffmpeg_dem_WTV_fuzzer-6192261941559296
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Peter Ross <pross@xvid.org>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 5552ceaf56
)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -795,7 +795,7 @@ static int parse_chunks(AVFormatContext *s, int mode, int64_t seekts, int *len_p
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ff_get_guid(pb, &g);
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len = avio_rl32(pb);
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if (len < 32) {
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if (len < 32 || len > INT_MAX - 7) {
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int ret;
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if (avio_feof(pb))
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return AVERROR_EOF;
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