ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Sun Sep 20 21:23:38 2020 +0200| [dfbea7b210ac95e59446f9512b25688df44c108b] | committer: Michael Niedermayer
avformat/moflex: Check pop_int() for overflow Fixes: signed integer overflow: 2 * 2132811776 cannot be represented in type 'int' Fixes: 25722/clusterfuzz-testcase-minimized-ffmpeg_IO_DEMUXER_fuzzer-6221704077246464 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Paul B Mahol <one...@gmail.com> Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=dfbea7b210ac95e59446f9512b25688df44c108b --- libavformat/moflex.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavformat/moflex.c b/libavformat/moflex.c index 2111157408..937f63cb63 100644 --- a/libavformat/moflex.c +++ b/libavformat/moflex.c @@ -62,6 +62,8 @@ static int pop_int(BitReader *br, AVIOContext *pb, int n) if (ret < 0) return ret; + if (ret > INT_MAX - value - value) + return AVERROR_INVALIDDATA; value = 2 * value + ret; } _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
