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avformat/cafdec: Do not store empty keys in read_info_chunk()

Fixes: Timeout
Fixes: 45543/clusterfuzz-testcase-minimized-ffmpeg_dem_CAF_fuzzer-5684953164152832

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 7ec28e1d4c)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2022-03-19 23:36:22 +01:00
parent bcc5755ae3
commit 2e31d39b31

View File

@ -235,6 +235,8 @@ static void read_info_chunk(AVFormatContext *s, int64_t size)
char value[1024]; char value[1024];
avio_get_str(pb, INT_MAX, key, sizeof(key)); avio_get_str(pb, INT_MAX, key, sizeof(key));
avio_get_str(pb, INT_MAX, value, sizeof(value)); avio_get_str(pb, INT_MAX, value, sizeof(value));
if (!*key)
continue;
av_dict_set(&s->metadata, key, value, 0); av_dict_set(&s->metadata, key, value, 0);
} }
} }