From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100]) by master.gitmailbox.com (Postfix) with ESMTP id A892842112 for ; Sun, 25 Dec 2022 22:03:45 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id A17F768B9E6; Mon, 26 Dec 2022 00:03:34 +0200 (EET) Received: from relay1-d.mail.gandi.net (relay1-d.mail.gandi.net [217.70.183.193]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 9D5A568B220 for ; Mon, 26 Dec 2022 00:03:26 +0200 (EET) Received: (Authenticated sender: michael@niedermayer.cc) by mail.gandi.net (Postfix) with ESMTPSA id B345B240005 for ; Sun, 25 Dec 2022 22:03:25 +0000 (UTC) From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Sun, 25 Dec 2022 23:03:23 +0100 Message-Id: <20221225220323.20968-2-michael@niedermayer.cc> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20221225220323.20968-1-michael@niedermayer.cc> References: <20221225220323.20968-1-michael@niedermayer.cc> Subject: [FFmpeg-devel] [PATCH 2/2] avformat/mxfdec: Use 64bit in remainder X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Archived-At: List-Archive: List-Post: Fixes: signed integer overflow: 48000 * 223587 cannot be represented in type 'int' Fixes: 54513/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-5817594836025344 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavformat/mxfdec.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavformat/mxfdec.c b/libavformat/mxfdec.c index e6118e141d..6150c131ec 100644 --- a/libavformat/mxfdec.c +++ b/libavformat/mxfdec.c @@ -3857,8 +3857,8 @@ static int64_t mxf_compute_sample_count(MXFContext *mxf, AVStream *st, if ((sample_rate.num / sample_rate.den) == 48000) { return av_rescale_q(edit_unit, sample_rate, track->edit_rate); } else { - int remainder = (sample_rate.num * time_base.num) % - (time_base.den * sample_rate.den); + int64_t remainder = (sample_rate.num * (int64_t)time_base.num) % + (time_base.den * (int64_t)sample_rate.den); if (remainder) av_log(mxf->fc, AV_LOG_WARNING, "seeking detected on stream #%d with time base (%d/%d) and " -- 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-request@ffmpeg.org with subject "unsubscribe".