From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BE2D5C61D9D for ; Sat, 25 Nov 2023 13:10:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232123AbjKYNKe (ORCPT ); Sat, 25 Nov 2023 08:10:34 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35972 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232070AbjKYNKc (ORCPT ); Sat, 25 Nov 2023 08:10:32 -0500 Received: from mail-pl1-f199.google.com (mail-pl1-f199.google.com [209.85.214.199]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2E98BA1 for ; Sat, 25 Nov 2023 05:10:39 -0800 (PST) Received: by mail-pl1-f199.google.com with SMTP id d9443c01a7336-1cfb2811203so5357785ad.1 for ; Sat, 25 Nov 2023 05:10:39 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1700917838; x=1701522638; 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=2x57+4D+SJs7wSbCC7T2hfTUa0WP/L6d0DTYOeJG0Nc=; b=IchKyD6owVnX9d4WuGVTjAqknEdginmU/aC3pl9n9+bhJo+moaiwAFviOOANqoaszH 6dPEVML4ytr0liBpVevR/7vOpfvAt5Wz0baB88d/dH49x1+JrQjdgIvwAPkMldiB7rrj VLrsuUb88fW4qwxAXvcp+6OI9EGU/cpeeep+Q5kl8HkhdnXjD4wJ3lwpzp2w076K2LF1 OTrSCQAdvwUKoJtXN8kJ2WdsSodn+ADTvJpSwCt2ku9nStMx69LE0Cl5+zMkhCzNiJjd vptnfZZ21IkpkPc4WoN96OAXH+t/AMUX6UB8oQLE7D8za3iI7MHL8ulukaaZXibYVzXS bzsQ== X-Gm-Message-State: AOJu0Yw6AzejPahky45BhCH8+po65mgxbaYNwYEpMWlrT3qyFbJwMpk2 IaKsbTIZua+jJrrLQu7gniqEWrQNFU00wLMar7zt5ooQB61K288= X-Google-Smtp-Source: AGHT+IGzxKWUKKNqh6e+pR5nx4q0WpRG8UUZAdkQlad63ywqXIH/tnzRYi4XPNtgIzS76Fo/oN2PxS+bKfo+swwDEOFNCgcF3QsM MIME-Version: 1.0 X-Received: by 2002:a17:902:c944:b0:1cf:a2e7:f849 with SMTP id i4-20020a170902c94400b001cfa2e7f849mr1243657pla.4.1700917838750; Sat, 25 Nov 2023 05:10:38 -0800 (PST) Date: Sat, 25 Nov 2023 05:10:38 -0800 In-Reply-To: <000000000000d40c3c05fdc05cd1@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000922bec060af9cbc2@google.com> Subject: Re: [syzbot] [udf?] KASAN: slab-use-after-free Read in udf_free_blocks From: syzbot To: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org. *** Subject: [udf?] KASAN: slab-use-after-free Read in udf_free_blocks Author: eadavis@qq.com please test uaf in udf_free_blocks #syz test https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git 123212f53f3e diff --git a/fs/open.c b/fs/open.c index 02dc608d40d8..bc2d1db2fcba 100644 --- a/fs/open.c +++ b/fs/open.c @@ -1441,11 +1441,11 @@ static long do_sys_openat2(int dfd, const char __user *filename, if (IS_ERR(f)) { put_unused_fd(fd); fd = PTR_ERR(f); + putname(tmp); } else { fd_install(fd, f); } } - putname(tmp); return fd; }