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 683BE4459A for ; Fri, 18 Nov 2022 21:09:49 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id C870068B883; Fri, 18 Nov 2022 23:09:31 +0200 (EET) Received: from relay11.mail.gandi.net (relay11.mail.gandi.net [217.70.178.231]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id C146A68AA68 for ; Fri, 18 Nov 2022 23:09:23 +0200 (EET) Received: (Authenticated sender: michael@niedermayer.cc) by mail.gandi.net (Postfix) with ESMTPSA id DA942100005 for ; Fri, 18 Nov 2022 21:09:22 +0000 (UTC) From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Fri, 18 Nov 2022 22:09:17 +0100 Message-Id: <20221118210918.3169-3-michael@niedermayer.cc> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20221118210918.3169-1-michael@niedermayer.cc> References: <20221118210918.3169-1-michael@niedermayer.cc> Subject: [FFmpeg-devel] [PATCH 3/4] avcodec/mobiclip: Check input size before (re)allocation 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: 52566/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MOBICLIP_fuzzer-4913160050311168 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/mobiclip.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/mobiclip.c b/libavcodec/mobiclip.c index aca462428c..c3b2383dbc 100644 --- a/libavcodec/mobiclip.c +++ b/libavcodec/mobiclip.c @@ -1216,6 +1216,9 @@ static int mobiclip_decode(AVCodecContext *avctx, AVFrame *rframe, AVFrame *frame = s->pic[s->current_pic]; int ret; + if (avctx->height/16 * (avctx->width/16) * 2 > 8LL*FFALIGN(pkt->size, 2)) + return AVERROR_INVALIDDATA; + av_fast_padded_malloc(&s->bitstream, &s->bitstream_size, pkt->size); -- 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".