From patchwork Mon Apr 10 23:47:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Niedermayer X-Patchwork-Id: 41080 Delivered-To: ffmpegpatchwork2@gmail.com Received: by 2002:a05:6a20:4645:b0:e3:3194:9d20 with SMTP id eb5csp2500378pzb; Mon, 10 Apr 2023 16:47:58 -0700 (PDT) X-Google-Smtp-Source: AKy350azv2bHNx7YZNERZTqzvcOEwzywloPV0DPdQgHNgx0PVhAcHe8jGIyh4yVst8YxzgV3YBj+ X-Received: by 2002:a17:906:37cd:b0:94e:13e9:3926 with SMTP id o13-20020a17090637cd00b0094e13e93926mr579027ejc.19.1681170478454; Mon, 10 Apr 2023 16:47:58 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1681170478; cv=none; d=google.com; s=arc-20160816; b=x5zRejFh9wk0TObyNThcVCk9WklLKgL/kltVp+FOJiRddI++oklo0TTViWHJyhKLHl I36GJOm+UdwlvUOCl7evgiYEmV9jXf7bjeQ43NTZXdCNxlq68/OUiY6CbVv5IG2Ge7b5 yNwB2BAIduIRz7ClGDlBz2eM8WJrzZt0xCmj7yPKAPS6JtuiAS+6nuqMlfuha9cBy6Ki kzXqzi1F3w2PASjtsS07WoSZ/LsHg941zJeDnc9svT0XE444M6E8ldVkn/YmepJ/N441 JGAskmO58d6FE2l4h70O2yEhKfxaH8NRtqeAbEwsSaPZkrHqTiJk21SFB33pJ+n4JBgI eYZA== 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=ajkJRydGN8H4VLvH7mMdKq2jE7PErtdaj+IoxOokg7s=; b=w4mOuZyRObI+ps9+6NCRBvIECUfk81cmEnjiYlQQDZ+ARu3dii1Fy4ZJO0lYZkAjsy ZRtjBulzpe/TrQuKwWDTiVdY/im49t3+1jQcdc3CVhbPKltELtJtzbtRNuogMBamDCpP 1cidp5mfR2aYAIzeYzeJk3LxvuQ2Cw4DNkNWsdBt+xw00qGqRfWo9KpmN9wtTgJsCsM7 ulrj24CAATv8DHJ1EeIbGTYEIZA3FWvhK+9gEgIZY7/OAlrhEMErVoSgJbdEou4R5Se8 UNTFuaeEFZTJYxVBGmJSuMlp64TIyv+t7ehZxBfQq7P4slc8aZO9gTW8GVgDT7+EJzda qgPw== 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 vg14-20020a170907d30e00b00930f5ecbd94si368984ejc.346.2023.04.10.16.47.57; Mon, 10 Apr 2023 16:47:58 -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 60DAA68B1AD; Tue, 11 Apr 2023 02:47:54 +0300 (EEST) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from relay9-d.mail.gandi.net (relay9-d.mail.gandi.net [217.70.183.199]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 98FF068B1AD for ; Tue, 11 Apr 2023 02:47:47 +0300 (EEST) Received: (Authenticated sender: michael@niedermayer.cc) by mail.gandi.net (Postfix) with ESMTPSA id E10D4FF804 for ; Mon, 10 Apr 2023 23:47:46 +0000 (UTC) From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Tue, 11 Apr 2023 01:47:45 +0200 Message-Id: <20230410234745.25355-1-michael@niedermayer.cc> X-Mailer: git-send-email 2.17.1 Subject: [FFmpeg-devel] [PATCH] avformat/rka: bps < 8 is invalid 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: nh0FEg2l7EVW Fixes: division by zero Fixes: 57828/clusterfuzz-testcase-minimized-ffmpeg_dem_RKA_fuzzer-6571818338353152 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavformat/rka.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavformat/rka.c b/libavformat/rka.c index 39e5b3bce12..36e25ade017 100644 --- a/libavformat/rka.c +++ b/libavformat/rka.c @@ -72,7 +72,7 @@ static int rka_read_header(AVFormatContext *s) if (channels == 0) return AVERROR_INVALIDDATA; bps = par->extradata[13]; - if (bps == 0) + if (bps < 8) return AVERROR_INVALIDDATA; size_offset = avio_rl32(s->pb); framepos = avio_tell(s->pb);