ffmpeg | branch: master | Michael Niedermayer <[email protected]> | Fri Oct 2 14:59:15 2020 +0200| [acd735efaf0ceba95c3f07751182af485af993d2] | committer: Michael Niedermayer
avformat/moflex: Check m->size before seeking Fixes: Infinite loop Fixes: 26016/clusterfuzz-testcase-minimized-ffmpeg_IO_DEMUXER_fuzzer-6195663833137152 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Paul B Mahol <[email protected]> Signed-off-by: Michael Niedermayer <[email protected]> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=acd735efaf0ceba95c3f07751182af485af993d2 --- libavformat/moflex.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/libavformat/moflex.c b/libavformat/moflex.c index 937f63cb63..a24e12eb8e 100644 --- a/libavformat/moflex.c +++ b/libavformat/moflex.c @@ -342,8 +342,11 @@ static int moflex_read_packet(AVFormatContext *s, AVPacket *pkt) m->in_block = 0; - if (m->flags % 2 == 0) + if (m->flags % 2 == 0) { + if (m->size <= 0) + return AVERROR_INVALIDDATA; avio_seek(pb, m->pos + m->size, SEEK_SET); + } } return AVERROR_EOF; _______________________________________________ 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".
