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 95F454317A for ; Mon, 22 Aug 2022 22:56:14 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id A320F68B9E6; Tue, 23 Aug 2022 01:55:57 +0300 (EEST) Received: from vie01a-dmta-at03-1.mx.upcmail.net (vie01a-dmta-at03-1.mx.upcmail.net [62.179.121.151]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 03A9868B934 for ; Tue, 23 Aug 2022 01:55:49 +0300 (EEST) Received: from [172.31.216.235] (helo=vie01a-pemc-psmtp-pe12.mail.upcmail.net) by vie01a-dmta-at03.mx.upcmail.net with esmtp (Exim 4.92) (envelope-from ) id 1oQGKi-005Zn8-MK for ffmpeg-devel@ffmpeg.org; Tue, 23 Aug 2022 00:55:48 +0200 Received: from ren-mail-psmtp-mg01. ([80.109.253.241]) by vie01a-pemc-psmtp-pe12.mail.upcmail.net with ESMTP id QGKioQO6g8s8UQGKio20xI; Tue, 23 Aug 2022 00:55:48 +0200 Received: from localhost ([213.47.68.29]) by ren-mail-psmtp-mg01. with ESMTP id QGKiofKWnOPqFQGKioXp16; Tue, 23 Aug 2022 00:55:48 +0200 X-Env-Mailfrom: michael@niedermayer.cc X-Env-Rcptto: ffmpeg-devel@ffmpeg.org X-SourceIP: 213.47.68.29 X-CNFS-Analysis: v=2.4 cv=OcX7sjfY c=1 sm=1 tr=0 ts=63040974 a=2hcxjKEKjp0CzLx6oWAm4g==:117 a=2hcxjKEKjp0CzLx6oWAm4g==:17 a=MKtGQD3n3ToA:10 a=1oJP67jkp3AA:10 a=GEAsPZ9sns4A:10 a=NEAV23lmAAAA:8 a=atLl2F6amod1EEmZevUA:9 From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Tue, 23 Aug 2022 00:55:47 +0200 Message-Id: <20220822225547.12895-4-michael@niedermayer.cc> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220822225547.12895-1-michael@niedermayer.cc> References: <20220822225547.12895-1-michael@niedermayer.cc> X-CMAE-Envelope: MS4wfFpa1zr9YnzZ7R11LqEtJQ4/VUEFjvKlo2UIdCzpUs1F7Vl5TPLYkrJFSFNs2WXSHY5C51D8YyD/r7WTaCDWK3L0YBtag1q+tyQdBWOJuwJtezj6s80Y eAHHnT0qi4n23JB+ULYaUGk3OJwx9KZECaHhbj5Je1zb3IKqZPlk48MGFLMKZLYOslz2Fxs4CM61cQ== Subject: [FFmpeg-devel] [PATCH 4/4] libavcodec/8bps: Check that line lengths fit within the buffer 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: Timeout Fixes: undefined pointer arithmetic Fixes: 50330/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_EIGHTBPS_fuzzer-5436287485607936 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/8bps.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/8bps.c b/libavcodec/8bps.c index 3bac9f64c4..4a3511948b 100644 --- a/libavcodec/8bps.c +++ b/libavcodec/8bps.c @@ -71,6 +71,9 @@ static int decode_frame(AVCodecContext *avctx, AVFrame *frame, unsigned char *planemap = c->planemap; int ret; + if (buf_size < planes * height *2) + return AVERROR_INVALIDDATA; + if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) return ret; -- 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".