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 7AE7E4024E for ; Sun, 18 Dec 2022 17:08:36 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 41D8B68B5A5; Sun, 18 Dec 2022 19:08:33 +0200 (EET) Received: from relay10.mail.gandi.net (relay10.mail.gandi.net [217.70.178.230]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 1A9DC68A8D9 for ; Sun, 18 Dec 2022 19:08:27 +0200 (EET) Received: (Authenticated sender: michael@niedermayer.cc) by mail.gandi.net (Postfix) with ESMTPSA id E8FBC240004 for ; Sun, 18 Dec 2022 17:08:25 +0000 (UTC) From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Sun, 18 Dec 2022 18:08:19 +0100 Message-Id: <20221218170823.32130-1-michael@niedermayer.cc> X-Mailer: git-send-email 2.17.1 Subject: [FFmpeg-devel] [PATCH 1/5] avcodec/tiff: Check camera_calibration for 0 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 0 Fixes: 53926/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TIFF_fuzzer-5680347889401856 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/tiff.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c index 41b5a6b7e4..820457fedc 100644 --- a/libavcodec/tiff.c +++ b/libavcodec/tiff.c @@ -2050,8 +2050,10 @@ again: } if (!s->use_color_matrix) { - for (i = 0; i < 3; i++) - s->premultiply[i] /= s->camera_calibration[i][i]; + for (i = 0; i < 3; i++) { + if (s->camera_calibration[i][i]) + s->premultiply[i] /= s->camera_calibration[i][i]; + } } else { for (int c = 0; c < 3; c++) { for (i = 0; i < 3; i++) { -- 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".