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 7616840954 for ; Tue, 1 Feb 2022 19:01:37 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 1EAF368B4A5; Tue, 1 Feb 2022 21:01:35 +0200 (EET) Received: from vie01a-dmta-pe03-2.mx.upcmail.net (vie01a-dmta-pe03-2.mx.upcmail.net [62.179.121.161]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id C876B68B468 for ; Tue, 1 Feb 2022 21:01:28 +0200 (EET) Received: from [172.31.216.235] (helo=vie01a-pemc-psmtp-pe12.mail.upcmail.net) by vie01a-dmta-pe03.mx.upcmail.net with esmtp (Exim 4.92) (envelope-from ) id 1nEyIa-00FRcF-08 for ffmpeg-devel@ffmpeg.org; Tue, 01 Feb 2022 19:54:40 +0100 Received: from localhost ([213.47.68.29]) by vie01a-pemc-psmtp-pe12.mail.upcmail.net with ESMTP id EyGenYMgoSgGFEyGenW60P; Tue, 01 Feb 2022 19:52:40 +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=DOBmluuZNDg1u3nCuM4A:9 From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Tue, 1 Feb 2022 19:52:39 +0100 Message-Id: <20220201185239.13450-2-michael@niedermayer.cc> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220201185239.13450-1-michael@niedermayer.cc> References: <20220201185239.13450-1-michael@niedermayer.cc> X-CMAE-Envelope: MS4wfNfvwkxXfjmXwNByXUrPffwtFx8IPX9lb0OXXjjFURv0NsLmeSMp4p0mQmTQoGVLTi9gcdznrXAGU+8GQSEKEJFfxez4Ct0pE/uWiT/NUvM0dv+m2Ql6 CX8EIte5wmtyywrtEEQ3hW4nKYmUT/ObOsQKJajXKMNDqttwo4CdyIy8 Subject: [FFmpeg-devel] [PATCH 2/2] avcodec/av1dec: Check tile_cols 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: 43769/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_AV1_fuzzer-5392562205097984 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/av1dec.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/av1dec.c b/libavcodec/av1dec.c index 62d459cded..581f22a849 100644 --- a/libavcodec/av1dec.c +++ b/libavcodec/av1dec.c @@ -394,6 +394,9 @@ static int get_tiles_info(AVCodecContext *avctx, const AV1RawTileGroup *tile_gro s->tg_start = tile_group->tg_start; s->tg_end = tile_group->tg_end; + if (s->raw_frame_header->tile_cols == 0) + return AVERROR_INVALIDDATA; + for (tile_num = tile_group->tg_start; tile_num <= tile_group->tg_end; tile_num++) { tile_row = tile_num / s->raw_frame_header->tile_cols; tile_col = tile_num % s->raw_frame_header->tile_cols; -- 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".