From patchwork Fri Jul 22 06:55:49 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Niedermayer X-Patchwork-Id: 36888 Delivered-To: ffmpegpatchwork2@gmail.com Received: by 2002:a05:6a21:1649:b0:8b:613a:194d with SMTP id no9csp239069pzb; Thu, 21 Jul 2022 23:56:04 -0700 (PDT) X-Google-Smtp-Source: AGRyM1uYKpRPuEaTPlze7hb5QV2IsGG/KaCHncvUUK7lUPAoPclNJLsjjUtLrGoDovp2UvWZHdQe X-Received: by 2002:a05:6402:414b:b0:43b:6b1a:c230 with SMTP id x11-20020a056402414b00b0043b6b1ac230mr2055620eda.42.1658472964382; Thu, 21 Jul 2022 23:56:04 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1658472964; cv=none; d=google.com; s=arc-20160816; b=EdSJLB5/KIzCQiA6BPTwdQFOvQhSxbt4aQH88yomyvWIsCLsIBBw3R23712CMLzZTJ UOdzJxuKfozWv7REVcoWVW7dVIng7byFaCyqS6NuB7Lu7Ycoj5FI053P0egrgtSu6GUi NH4HJV05UPpTD6ea8pZ6m/n/liQw6/hfGeYcIGIAxOA9WpIHGN66noiQ3sPc4HmSdxxq 6rzo66qDMr3bq4Ytgw61A9h7/b/oCp4RP7jkHSfrIEIYR9/g04XU01Php1dfYn8yVS0y 0iSeXk/AMJUm6b9KoCAHoBc/ce3Ffe2lKtW8rIIvcl7roDjonA5KOQbsqad4bSBUEsQ+ 8m5w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:content-transfer-encoding:mime-version:reply-to :list-subscribe:list-help:list-post:list-archive:list-unsubscribe :list-id:precedence:subject:message-id:date:to:from:delivered-to; bh=dVTHpNxya615gE0147n8oB8xE/NmDAuck+kXbO0xXq4=; b=U1/Gy5641G8mlc+PdP6dzMFwDRnwsNYI2dhyN0gWZgFHuviQmwcvq5ar3KDiwR1wiR oFK3tk030o9x8A/3fVoO3hV8/mARyQZgDq5x7Z15kN12vPZUOit3CYqzni8zeAssiR6o M+Wk/vj3A1kBMkpXyj2hyTtxi4IuOaXzRZEOEOGaZ/nbCB96aGgCjGKj+GUhx1Y05rkV oO8B9I4hZiAT1FMMCFN7pVV8obaQ79XCMAUa20b7RQ5eNx9josXcGUA4yBP+ff/4ONSL faTlh98qa7QCG2syTOzwUQ0i8B5dlv1/ZbhdAutg8IUEknc4KqGMEZF+IHgFr//jTgRh k2vg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) smtp.mailfrom=ffmpeg-devel-bounces@ffmpeg.org Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org. [79.124.17.100]) by mx.google.com with ESMTP id e3-20020a056402148300b0043ac928792esi4667496edv.541.2022.07.21.23.56.03; Thu, 21 Jul 2022 23:56:04 -0700 (PDT) Received-SPF: pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) client-ip=79.124.17.100; Authentication-Results: mx.google.com; spf=pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) smtp.mailfrom=ffmpeg-devel-bounces@ffmpeg.org Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 89DF868B6E8; Fri, 22 Jul 2022 09:55:59 +0300 (EEST) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from vie01a-dmta-at01-3.mx.upcmail.net (vie01a-dmta-at01-3.mx.upcmail.net [62.179.121.147]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 6A1C168B205 for ; Fri, 22 Jul 2022 09:55:53 +0300 (EEST) Received: from [172.31.216.235] (helo=vie01a-pemc-psmtp-pe12.mail.upcmail.net) by vie01a-dmta-at01.mx.upcmail.net with esmtp (Exim 4.92) (envelope-from ) id 1oEmZk-001rRP-0J for ffmpeg-devel@ffmpeg.org; Fri, 22 Jul 2022 08:55:52 +0200 Received: from ren-mail-psmtp-mg01. ([80.109.253.241]) by vie01a-pemc-psmtp-pe12.mail.upcmail.net with ESMTP id EmZjox5Zi8s8UEmZjoijZc; Fri, 22 Jul 2022 08:55:51 +0200 Received: from localhost ([213.47.68.29]) by ren-mail-psmtp-mg01. with ESMTP id EmZjotUDiOPqFEmZjoiE6n; Fri, 22 Jul 2022 08:55:51 +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=62da49f7 a=2hcxjKEKjp0CzLx6oWAm4g==:117 a=2hcxjKEKjp0CzLx6oWAm4g==:17 a=MKtGQD3n3ToA:10 a=1oJP67jkp3AA:10 a=GEAsPZ9sns4A:10 a=NEAV23lmAAAA:8 a=QANlSW8LVmXkupGV7QwA:9 From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Fri, 22 Jul 2022 08:55:49 +0200 Message-Id: <20220722065550.5431-1-michael@niedermayer.cc> X-Mailer: git-send-email 2.17.1 X-CMAE-Envelope: MS4wfOie1r+9/GksJKBzlGOzSKTyebX2YSG36S0yFysfPBRAmDU8TcMB5YzpMOT5pm5aGDLgkZNIPUaPm4WebkJJ34Nhpu8BgLDXG4gxuf2aHHU6mEQ3ChYr N//osVpz1Hqn00oIsL85IQJIE5DTMZuuQ6ds5DrNGvI6V1r9+6r732mIs4q7AeWGQkg4ObxCzxftvA== Subject: [FFmpeg-devel] [PATCH 1/2] avcodec/tiff: Check tile_length and tile_width 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 Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" X-TUID: AGLoSjwDBel1 Fixes: Division by 0 Fixes: 49235/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TIFF_fuzzer-5495613847896064 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/tiff.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c index 349df14035..329eafe494 100644 --- a/libavcodec/tiff.c +++ b/libavcodec/tiff.c @@ -965,6 +965,9 @@ static int dng_decode_tiles(AVCodecContext *avctx, AVFrame *frame, int pos_x = 0, pos_y = 0; int ret; + if (s->tile_width <= 0 || s->tile_length <= 0) + return AVERROR_INVALIDDATA; + has_width_leftover = (s->width % s->tile_width != 0); has_height_leftover = (s->height % s->tile_length != 0);