From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f198.google.com (mail-il1-f198.google.com [209.85.166.198]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4B5E31487F6 for ; Mon, 16 Dec 2024 07:19:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.198 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734333552; cv=none; b=GoYSggDWOf4dsNpryKHUtHSavpACTFbzhFLfayFAqS1l9STjlUa8vyNYIEEc9VEjXp6EhEKEH/YNRFK1NIPlwZMCnn66iKEnQC6LgbXwL1W3vgAZR0vx0JxqCLrSr9IErHVDTR5R9A8YndWrvpwT53LbmYWYGUlbnoOyP966EgI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734333552; c=relaxed/simple; bh=qfyH8LTOFNjp+RUtIEHV0KupLnMm+SlXo+VPwDHoO5I=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=nnIkivA7IX9EW0XW4bkNYnclpbwyaohkqZ6BmY4bICAtxzUsAb/GZdB4XME68RjcDEACyf7av5SA81/iGi+Fkt2et5WAWPcF/ZGk5R2fR74dQeyZD+LxgOK98RRrsPJ9VWxHyMnjBAw6VMXVq/kMmXNNEiKD7ZZObLi5cF7vJnc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.198 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-il1-f198.google.com with SMTP id e9e14a558f8ab-3a7d85ab308so35648565ab.3 for ; Sun, 15 Dec 2024 23:19:11 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1734333550; x=1734938350; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=PpMJI4OabJ+Wct5olSgWEL5BMeKs4ncR2B170z4kaEM=; b=u3PtnKpBgN7/4dBoqJjaOCesXY1LHfta+KhUTWflRJ//Yml3VngOsM+LNRrwrR+jIG IuyTT3aRRLBMiW2mpCTQEiWHao9Wt6o5MWbIudEPeC0LWsRSUappnvI4Y8B950pVj/KC ToYvugdCAvFo6vga8mniMEjMzmWU5slq90QRPH4ZIR7nUQtfVzRNfOtIiUc09oe5NSVl UdyZz1LEhcpvf1Yiw52PlXBvbNDbXYr7VM2jIu7WQqR19Z7oKzANnjLOFD0ysaWJ6HRh M6bXVvlGw8XatppQ3IpbHf1mmzlLLuatLnPpBpFyL9Ual/2rXsUiG+lv76lby+AqUGhl HTnA== X-Gm-Message-State: AOJu0Yx1AVfdaSiT4oTABSy/3qtAI3beec6JM4AGmlBLOIjOzqbIWP5e F27h1QGiAKBGWscXRdQE/l0DTiZUMlF3lnpZmgFv5+QM8JNuqb4DVqKeXPGGiW49R9mfzRtNZdN vJxZjssyH9A1kMCAbq/ftMnjud7igXNjP8kAbJm1X0Hh/bYE4Ka6uQoc= X-Google-Smtp-Source: AGHT+IGL9AQbeXD1jyy0rBfGNMzJwqV22WldJrmpR8mD9IG5Uwb/ZM5G2AFUsl8KVzzdFdm1dRjMf/R0st9YNieWyLKQYWt5qbnL Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:152e:b0:3a7:6c5c:9aa4 with SMTP id e9e14a558f8ab-3aff039a391mr127913435ab.12.1734333550455; Sun, 15 Dec 2024 23:19:10 -0800 (PST) Date: Sun, 15 Dec 2024 23:19:10 -0800 In-Reply-To: <675f4ea7.050a0220.37aaf.0105.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <675fd46e.050a0220.37aaf.0117.GAE@google.com> Subject: Re: [syzbot] Re: [syzbot] [tomoyo?] WARNING in tomoyo_write_control From: syzbot To: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org. *** Subject: Re: [syzbot] [tomoyo?] WARNING in tomoyo_write_control Author: lizhi.xu@windriver.com User input a too large avail length 0xfffffdeful. #syz test diff --git a/security/tomoyo/common.c b/security/tomoyo/common.c index 5c7b059a332a..d25752eb8790 100644 --- a/security/tomoyo/common.c +++ b/security/tomoyo/common.c @@ -2656,6 +2656,9 @@ ssize_t tomoyo_write_control(struct tomoyo_io_buffer *head, return -EINVAL; if (mutex_lock_interruptible(&head->io_sem)) return -EINTR; + if (avail_len << PAGE_SHIFT > MAX_PAGE_ORDER) + return -EINVAL; + cp0 = head->write_buf; head->read_user_buf_avail = 0; idx = tomoyo_read_lock();