ffmpeg | branch: master | Michael Niedermayer <[email protected]> | Thu Feb 11 22:58:53 2021 +0100| [b5d8fe1c874947ca67ee8117b18f8052f0e590fc] | committer: Michael Niedermayer
avformat/flvdec: Check array entry number Fixes: signed integer overflow: -2147483648 - 1 cannot be represented in type 'int' Fixes: 30209/clusterfuzz-testcase-minimized-ffmpeg_dem_FLV_fuzzer-5724831658147840 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <[email protected]> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=b5d8fe1c874947ca67ee8117b18f8052f0e590fc --- libavformat/flvdec.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavformat/flvdec.c b/libavformat/flvdec.c index e4b40a195c..fca6f82f5c 100644 --- a/libavformat/flvdec.c +++ b/libavformat/flvdec.c @@ -875,6 +875,8 @@ static int amf_skip_tag(AVIOContext *pb, AMFDataType type, int depth) parse_name = 0; case AMF_DATA_TYPE_MIXEDARRAY: nb = avio_rb32(pb); + if (nb < 0) + return AVERROR_INVALIDDATA; case AMF_DATA_TYPE_OBJECT: while(!pb->eof_reached && (nb-- > 0 || type != AMF_DATA_TYPE_ARRAY)) { if (parse_name) { _______________________________________________ ffmpeg-cvslog mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
