avformat/mov: Check comp_brand_size
Fixes: signed integer overflow: 2147483647 + 1 cannot be represented in type 'int'
Fixes: 24457/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-5760093644390400
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 ffa6072fc7
)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
@@ -1117,7 +1117,7 @@ static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
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av_dict_set_int(&c->fc->metadata, "minor_version", minor_ver, 0);
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comp_brand_size = atom.size - 8;
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if (comp_brand_size < 0)
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if (comp_brand_size < 0 || comp_brand_size == INT_MAX)
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return AVERROR_INVALIDDATA;
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comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */
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if (!comp_brands_str)
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