ffmpeg | branch: release/4.4 | Michael Niedermayer <mich...@niedermayer.cc> | Tue Mar 26 00:16:39 2024 +0100| [05430187c98087aeb374caee481195af355f65f4] | committer: Michael Niedermayer
avformat/concatdec: Check user_duration sum Fixes: 62276/clusterfuzz-testcase-minimized-ffmpeg_dem_CONCAT_fuzzer-6434245599690752 Fixes: signed integer overflow: 9223372026773000000 + 22337000000 cannot be represented in type 'long' Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit 007486058c2eb7a7518450a2ddb4fa98845887a3) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=05430187c98087aeb374caee481195af355f65f4 --- libavformat/concatdec.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavformat/concatdec.c b/libavformat/concatdec.c index 59b770dc3a..d45e52d7c6 100644 --- a/libavformat/concatdec.c +++ b/libavformat/concatdec.c @@ -501,6 +501,8 @@ static int concat_read_header(AVFormatContext *avf) cat->files[i].user_duration = cat->files[i].outpoint - cat->files[i].inpoint; } cat->files[i].duration = cat->files[i].user_duration; + if (time + (uint64_t)cat->files[i].user_duration > INT64_MAX) + return AVERROR_INVALIDDATA; time += cat->files[i].user_duration; } if (i == cat->nb_files) { _______________________________________________ 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".
