[FFmpeg-cvslog] avformat/cafdec: Do not store empty keys in read_info_chunk()
Michael Niedermayer
git at videolan.org
Sun Apr 10 00:37:04 EEST 2022
ffmpeg | branch: release/4.1 | Michael Niedermayer <michael at niedermayer.cc> | Sat Mar 19 23:36:22 2022 +0100| [bbdb02a73c215857ba9ed2bd59746e0f8af76eb4] | committer: Michael Niedermayer
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 at niedermayer.cc>
(cherry picked from commit 7ec28e1d4cef723485f50f7a08859752b79b570c)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=bbdb02a73c215857ba9ed2bd59746e0f8af76eb4
---
libavformat/cafdec.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/libavformat/cafdec.c b/libavformat/cafdec.c
index 4817b90b0b..b9e70ea2fb 100644
--- a/libavformat/cafdec.c
+++ b/libavformat/cafdec.c
@@ -243,6 +243,8 @@ static void read_info_chunk(AVFormatContext *s, int64_t size)
char value[1024];
avio_get_str(pb, INT_MAX, key, sizeof(key));
avio_get_str(pb, INT_MAX, value, sizeof(value));
+ if (!*key)
+ continue;
av_dict_set(&s->metadata, key, value, 0);
}
}
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