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 1ACF141A24 for ; Wed, 15 Dec 2021 17:38:35 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id D1FB968B0AE; Wed, 15 Dec 2021 19:38:22 +0200 (EET) Received: from vie01a-dmta-pe05-2.mx.upcmail.net (vie01a-dmta-pe05-2.mx.upcmail.net [84.116.36.12]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 7C92968B07F for ; Wed, 15 Dec 2021 19:38:14 +0200 (EET) Received: from [172.31.216.235] (helo=vie01a-pemc-psmtp-pe12.mail.upcmail.net) by vie01a-dmta-pe05.mx.upcmail.net with esmtp (Exim 4.92) (envelope-from ) id 1mxYEI-00Den1-08 for ffmpeg-devel@ffmpeg.org; Wed, 15 Dec 2021 18:38:14 +0100 Received: from localhost ([213.47.68.29]) by vie01a-pemc-psmtp-pe12.mail.upcmail.net with ESMTP id xYDKmlMLUSgGFxYDKmGxtm; Wed, 15 Dec 2021 18:37:14 +0100 X-Env-Mailfrom: michael@niedermayer.cc X-Env-Rcptto: ffmpeg-devel@ffmpeg.org X-SourceIP: 213.47.68.29 X-CNFS-Analysis: v=2.3 cv=f8Q2+96M c=1 sm=1 tr=0 a=2hcxjKEKjp0CzLx6oWAm4g==:117 a=2hcxjKEKjp0CzLx6oWAm4g==:17 a=MKtGQD3n3ToA:10 a=1oJP67jkp3AA:10 a=GEAsPZ9sns4A:10 a=ZZnuYtJkoWoA:10 a=NEAV23lmAAAA:8 a=I-IqingddPa0U9UVxwgA:9 From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Wed, 15 Dec 2021 18:37:13 +0100 Message-Id: <20211215173713.7047-2-michael@niedermayer.cc> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20211215173713.7047-1-michael@niedermayer.cc> References: <20211215173713.7047-1-michael@niedermayer.cc> X-CMAE-Envelope: MS4wfF0mI80WbQiNvGP1gOLKvbSqZI12ae9P6zPW40GBm2WOuFUdtyPIqNFY0mEyLwLnUVX7VOY4ZBTDYqQXni9rc3ovnB7aqTeE/gypDBetlCh7bLrUQaAW CkobS5xbm4uvVRSGy00G9UtKYxNZlFY41c1zSk/po3Cnnufq7CUr1rhL Subject: [FFmpeg-devel] [PATCH 2/2] avformat/mvdec: Use 64 bit in timestamp computation 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: division by zero Fixes: 42198/clusterfuzz-testcase-minimized-ffmpeg_dem_MV_fuzzer-5054366405492736.fuzz Fixes: 42222/clusterfuzz-testcase-minimized-ffmpeg_dem_MV_fuzzer-4561249331970048 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavformat/mvdec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavformat/mvdec.c b/libavformat/mvdec.c index 8b54a9ab045..5d184f20a49 100644 --- a/libavformat/mvdec.c +++ b/libavformat/mvdec.c @@ -381,7 +381,7 @@ static int mv_read_header(AVFormatContext *avctx) avio_skip(pb, 8); av_add_index_entry(ast, pos, timestamp, asize, 0, AVINDEX_KEYFRAME); av_add_index_entry(vst, pos + asize, i, vsize, 0, AVINDEX_KEYFRAME); - timestamp += asize / (ast->codecpar->channels * bytes_per_sample); + timestamp += asize / (ast->codecpar->channels * (uint64_t)bytes_per_sample); } } else if (!version && avio_rb16(pb) == 3) { avio_skip(pb, 4); -- 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".