From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f198.google.com (mail-oi1-f198.google.com [209.85.167.198]) (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 8365D23E33D for ; Sat, 3 Oct 2026 13:13:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.198 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791033240; cv=none; b=nWaePcSs7bsOuzQmb4AMRwgq1WDPHDsArbA7Rc/LNs7oExBjd3nDyXSBEvmZPiO6nMnbrKxIdkCODTfC1Ys+iRW5yvnSyYVgjzVf9zYYhnxUz28imyOT7tyYcU5ZTKK5R+fJp9EIwLzZ+D8YMQsKh1gwfkbPD/7dspF+TkSllx0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791033240; c=relaxed/simple; bh=n9FfhBYuFIKuM0JKNvNL7w8NHvM+L7kz5nJM6xzTARc=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=Vzj7jc+YWMxi8GudoC+oPfdeyjhRa4M2HdiFjUf3KOpuK6tOC0FktVoO6JmxYgYShTVfjqxckVur9kInieN8tHvRwCXakGodTwqbzn2myyQCuBzcHjOLUZVIAnqrBqjnI8gtF1VMbaInV2vg45cMdZUO/0vY2HF7UZeZA1ivZd0= 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=209.85.167.198 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-oi1-f198.google.com with SMTP id 5614622812f47-4b28dafb8e1so155564b6e.2 for ; Sat, 03 Oct 2026 06:13:58 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1791033237; x=1791638037; h=content-type:to:from:subject:message-id:in-reply-to:date :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to:content-type; bh=onKem4/H9ibCzX4aAMGlQkAgYidwU0xk7xyv/UiX7tY=; b=Hysdg+44/4klvWQAKlP+KU8LKLz2siYcracffP6QjIAX9TWieliTYRoY+ef6Xd5MAl ud706TtS1jKY3ZAj+oHXFXoKr4/+mW+C0rkkmFTVA5bvXNjtcOkaKfPALNDtnBCL/els CoFysWCX4xGdV4IMitpE0jS2xrt3puJjMDy5WvTPi+PD5bUQtSuUiDkmLqVkpaqe17TO Cp6ocN27XmJcxXZjVqK/hdXMy59veiV8pyEZjQ62Vs2VkJiSPomPuHjVQv2tfqAjhHJP dcEecfYe+3jgCKtjgp7rENSCLYmwb3OjE2T6QOjQy5Cifb3DOcnRs4XXLOPLZOfpeQDz cevQ== X-Gm-Message-State: AFuF++kMeZ+q+nhdWylW4Khr85WQnm4/0I7+MHsKr7BMaeG4l+aoNNAS SgYUONzrFsQJlQjsHxr8/cfHJDJ+SyKkXtczOLa6RdhE5eDP7Iobgc5IyFFeYB9zc65fKmurlUf TU7k1ZojpEKmQII3QqzIK9KcxLOUWM1BZQQXQMGaDeq/Ha6Yyw8+1fIEoW3E= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:138f:b0:4f4:415:6f17 with SMTP id 5614622812f47-4f52ad93baamr4647775b6e.43.1791033237323; Sat, 03 Oct 2026 06:13:57 -0700 (PDT) Date: Sat, 03 Oct 2026 06:13:57 -0700 In-Reply-To: <6abeecdc.7503fbd6.2d3f6.0010.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6ac0ff95.9ad129c8.3858c0.0017.GAE@google.com> Subject: Forwarded: [PATCH v1] Testing for a slub out of bounds and uaf... From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com. *** Subject: [PATCH v1] Testing for a slub out of bounds and uaf... Author: nsvatoslav515@gmail.com #syz test Signed-off-by: Svyatoslav Nikolenko --- fs/ecryptfs/keystore.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/fs/ecryptfs/keystore.c b/fs/ecryptfs/keystore.c index 51651314b7a6..b9cdafb98e45 100644 --- a/fs/ecryptfs/keystore.c +++ b/fs/ecryptfs/keystore.c @@ -19,6 +19,7 @@ #include #include #include "ecryptfs_kernel.h" +#include /* * request_key returned an error instead of a valid key address; @@ -738,6 +739,20 @@ ecryptfs_write_tag_70_packet(char *dest, size_t *remaining_bytes, goto out_free_unlock; } + struct user_key_payload *ukp = user_key_payload_locked(auth_tok_key); + if (!ukp || ukp->datalen < sizeof(struct ecryptfs_auth_tok)) { + printk(KERN_ERR "Error key payload too small\n"); + rc = -EINVAL; + goto out_free_unlock; + } + + if (s->auth_tok->token.password.session_key_encryption_key_bytes > + sizeof(s->auth_tok->token.password.session_key_encryption_key)) { + printk(KERN_ERR "Error FNEK key size too large\n"); + rc = -EINVAL; + goto out_free_unlock; + } + md5(s->auth_tok->token.password.session_key_encryption_key, s->auth_tok->token.password.session_key_encryption_key_bytes, s->hash); -- 2.47.3