ffmpeg | branch: master | Michael Niedermayer <michael@niedermayer.cc> | Tue Jan 12 21:54:31 2021 +0100| [9725d07a1770fbfafe5f7b3f7d95a2a513308538] | committer: Michael Niedermayer avformat/flvdec: Check for EOF in amf_skip_tag() Fixes: Timeout Fixes: 29070/clusterfuzz-testcase-minimized-ffmpeg_dem_KUX_fuzzer-5650106766458880 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=9725d07a1770fbfafe...

libavformat/flvdec.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavformat/flvdec.c b/libavformat/flvdec.c index c1f02125bc..943c0278e5 100644 --- a/libavformat/flvdec.c +++ b/libavformat/flvdec.c @@ -854,6 +854,9 @@ static int amf_skip_tag(AVIOContext *pb, AMFDataType type, int depth) if (depth > MAX_DEPTH) return AVERROR_PATCHWELCOME; + if (avio_feof(pb)) + return AVERROR_EOF; + switch (type) { case AMF_DATA_TYPE_NUMBER: avio_skip(pb, 8);