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 1539C40870 for ; Thu, 23 Dec 2021 21:16:37 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 3D84B68B1C3; Thu, 23 Dec 2021 23:16:35 +0200 (EET) Received: from vie01a-dmta-pe02-2.mx.upcmail.net (vie01a-dmta-pe02-2.mx.upcmail.net [62.179.121.158]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 89A5B68AEE5 for ; Thu, 23 Dec 2021 23:16:28 +0200 (EET) Received: from [172.31.216.235] (helo=vie01a-pemc-psmtp-pe12.mail.upcmail.net) by vie01a-dmta-pe02.mx.upcmail.net with esmtp (Exim 4.92) (envelope-from ) id 1n0VRs-00AuDX-0F for ffmpeg-devel@ffmpeg.org; Thu, 23 Dec 2021 22:16:28 +0100 Received: from localhost ([213.47.68.29]) by vie01a-pemc-psmtp-pe12.mail.upcmail.net with ESMTP id 0VQunM8NUSgGF0VQunabYu; Thu, 23 Dec 2021 22:15:28 +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=JMo6NDeKBe8AcFON-J4A:9 From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Thu, 23 Dec 2021 22:15:27 +0100 Message-Id: <20211223211527.20408-5-michael@niedermayer.cc> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20211223211527.20408-1-michael@niedermayer.cc> References: <20211223211527.20408-1-michael@niedermayer.cc> X-CMAE-Envelope: MS4wfJcCTGtosQs0tcnrCF6utPh4b7FPGgQcBTTtlULIlnhbS2gmYLQdWZYQInFu+WDmgh5n4rl9VA0ffK1CvYlGu2+ayU9KSj0MgxWsGvDhjbPy77z3VKgc esBOUieu13Ozs/rN7/r3DF+TIEfB7FFZazgeK7wy20iLl22q29G4xW9u Subject: [FFmpeg-devel] [PATCH 5/5] avformat/mvdec: Check bytes_per_sample 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: 42814/clusterfuzz-testcase-minimized-ffmpeg_dem_MV_fuzzer-4787014237552640 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavformat/mvdec.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavformat/mvdec.c b/libavformat/mvdec.c index 1a5012e5076..390f6ba4de8 100644 --- a/libavformat/mvdec.c +++ b/libavformat/mvdec.c @@ -366,6 +366,9 @@ static int mv_read_header(AVFormatContext *avctx) avpriv_request_sample(avctx, "Audio compression (format %i)", v); } + if (bytes_per_sample <= 0) + return AVERROR_INVALIDDATA; + if (set_channels(avctx, ast, avio_rb32(pb)) < 0) return AVERROR_INVALIDDATA; -- 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".