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 45AB6430A7 for ; Thu, 17 Nov 2022 23:14:28 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 9A70468BBD9; Fri, 18 Nov 2022 01:14:25 +0200 (EET) Received: from relay6-d.mail.gandi.net (relay6-d.mail.gandi.net [217.70.183.198]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id CF92168B8E0 for ; Fri, 18 Nov 2022 01:14:19 +0200 (EET) Received: (Authenticated sender: michael@niedermayer.cc) by mail.gandi.net (Postfix) with ESMTPSA id D63D5C0008 for ; Thu, 17 Nov 2022 23:14:18 +0000 (UTC) From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Fri, 18 Nov 2022 00:14:17 +0100 Message-Id: <20221117231418.20994-1-michael@niedermayer.cc> X-Mailer: git-send-email 2.17.1 Subject: [FFmpeg-devel] [PATCH 1/2] avcodec/tiff: Avoid 0.0/0.0 in camera_xyz_coeff() 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: 52230/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TIFF_fuzzer-5922608915021824 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/tiff.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c index 5b56892071..cde318d5e5 100644 --- a/libavcodec/tiff.c +++ b/libavcodec/tiff.c @@ -1896,6 +1896,8 @@ static void camera_xyz_coeff(TiffContext *s, for (i = 0; i < 3; i++) { for (num = j = 0; j < 3; j++) num += cam2rgb[i][j]; + if (!num) + num = 1; for (j = 0; j < 3; j++) cam2rgb[i][j] /= num; s->premultiply[i] = 1.f / num; -- 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".