ffmpeg | branch: release/2.8 | Michael Niedermayer <mich...@niedermayer.cc> | Thu Mar 8 22:40:50 2018 +0100| [3b5645a72928e3eab7594205bab2d8aed8c114e8] | committer: Michael Niedermayer
avformat/avidec: Fix integer overflow in cum_len check Fixes: signed integer overflow: 3775922176 * 4278190080 cannot be represented in type 'long' Fixes: Chromium bug 791237 Reported-by: Matt Wolenetz <wolen...@google.com> Reviewed-by: Matt Wolenetz <wolen...@google.com> Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit 06e092e7819b9437da32925200e7c369f93d82e7) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=3b5645a72928e3eab7594205bab2d8aed8c114e8 --- libavformat/avidec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavformat/avidec.c b/libavformat/avidec.c index 223ddd0530..81a43632bb 100644 --- a/libavformat/avidec.c +++ b/libavformat/avidec.c @@ -665,7 +665,7 @@ static int avi_read_header(AVFormatContext *s) st->start_time = 0; avio_rl32(pb); /* buffer size */ avio_rl32(pb); /* quality */ - if (ast->cum_len*ast->scale/ast->rate > 3600) { + if (ast->cum_len > 3600LL * ast->rate / ast->scale) { av_log(s, AV_LOG_ERROR, "crazy start time, iam scared, giving up\n"); ast->cum_len = 0; } _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
