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> --- libavformat/concatdec.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavformat/concatdec.c b/libavformat/concatdec.c index ac541a592fa..f1401e43530 100644 --- a/libavformat/concatdec.c +++ b/libavformat/concatdec.c @@ -679,6 +679,8 @@ 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) { -- 2.17.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
