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 49FE246DE8 for ; Wed, 11 Oct 2023 18:10:28 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 3789268C97B; Wed, 11 Oct 2023 21:10:25 +0300 (EEST) Received: from relay9-d.mail.gandi.net (relay9-d.mail.gandi.net [217.70.183.199]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 902CB68C835 for ; Wed, 11 Oct 2023 21:10:18 +0300 (EEST) Received: by mail.gandi.net (Postfix) with ESMTPSA id 929FCFF809 for ; Wed, 11 Oct 2023 18:10:16 +0000 (UTC) From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Wed, 11 Oct 2023 20:10:13 +0200 Message-Id: <20231011181015.6433-1-michael@niedermayer.cc> X-Mailer: git-send-email 2.17.1 X-GND-Sasl: michael@niedermayer.cc Subject: [FFmpeg-devel] [PATCH 1/3] avformat/tmv: Check video chunk size 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: This check matches the audio chunk check Fixes: Timeout Fixes: 62681/clusterfuzz-testcase-minimized-ffmpeg_dem_TMV_fuzzer-5299107876700160 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavformat/tmv.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libavformat/tmv.c b/libavformat/tmv.c index ea39954190..18105f764e 100644 --- a/libavformat/tmv.c +++ b/libavformat/tmv.c @@ -103,6 +103,10 @@ static int tmv_read_header(AVFormatContext *s) char_cols = avio_r8(pb); char_rows = avio_r8(pb); tmv->video_chunk_size = char_cols * char_rows * 2; + if (!tmv->video_chunk_size) { + av_log(s, AV_LOG_ERROR, "invalid video chunk size\n"); + return AVERROR_INVALIDDATA; + } features = avio_r8(pb); if (features & ~(TMV_PADDING | TMV_STEREO)) { -- 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".