From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 534C41E48A; Mon, 18 Aug 2025 13:49:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755524955; cv=none; b=hFsi9Hw1/dzyN9tpXZV2gjOcIHTV3MsMgx0VluQI+vQdyTBK8nr54q1AZwEETTuB5LphiifCER+OQ+EyqngK9ClXkcXVWF6NQ3dEFPwWcJCmhfqVc6LNX7eYqiUAUtjhXHiHRQqn5QPXUl4X00fjjWvDG0MPIjgI/XRklRCHhZQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755524955; c=relaxed/simple; bh=eBbA60LyVR+9jN6SjS/mvmViyaVHbKNdTrGp4/cMB7Q=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=JzbUx9K5zU8P7uBNPJAKLsQsAwcn93Wr26UgIJNEZCzx1vx2Qi/iG/nJT4iK/Mzv5kDK51gCEE+KfcWGZGU3L9L15LtK//2CC3bJ6jmGZJJSbFsYM24BJH3FI5/wTIWHJEHmy3W6YLaFTPvsz56DQ69Bc7Cc/N1iep6TBXWHaNM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=M4PqJ8PW; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="M4PqJ8PW" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CE7CDC4CEEB; Mon, 18 Aug 2025 13:49:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1755524955; bh=eBbA60LyVR+9jN6SjS/mvmViyaVHbKNdTrGp4/cMB7Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=M4PqJ8PWopgIDrUTfycBsJC/M3ybY6dX2v0Em150sGHK5XcZkoWzLHo+V19kXVSrH zGXFNyLracTAL1GIixVX3h5gwsQLI5KHEaRiHS+ZVyyeMaLfY03SjX4xtlVrP4CPZO bhy9plzqVCU0nk0RUhsG6pVWGrMdiwq/leXiOEwU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, syzbot+598057afa0f49e62bd23@syzkaller.appspotmail.com, Lizhi Xu , Konstantin Komarov , Sasha Levin Subject: [PATCH 6.16 115/570] fs/ntfs3: Add sanity check for file name Date: Mon, 18 Aug 2025 14:41:42 +0200 Message-ID: <20250818124510.242825295@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250818124505.781598737@linuxfoundation.org> References: <20250818124505.781598737@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.16-stable review patch. If anyone has any objections, please let me know. ------------------ From: Lizhi Xu [ Upstream commit e841ecb139339602bc1853f5f09daa5d1ea920a2 ] The length of the file name should be smaller than the directory entry size. Reported-by: syzbot+598057afa0f49e62bd23@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=598057afa0f49e62bd23 Signed-off-by: Lizhi Xu Signed-off-by: Konstantin Komarov Signed-off-by: Sasha Levin --- fs/ntfs3/dir.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/ntfs3/dir.c b/fs/ntfs3/dir.c index b6da80c69ca6..600e66035c1b 100644 --- a/fs/ntfs3/dir.c +++ b/fs/ntfs3/dir.c @@ -304,6 +304,9 @@ static inline bool ntfs_dir_emit(struct ntfs_sb_info *sbi, if (sbi->options->nohidden && (fname->dup.fa & FILE_ATTRIBUTE_HIDDEN)) return true; + if (fname->name_len + sizeof(struct NTFS_DE) > le16_to_cpu(e->size)) + return true; + name_len = ntfs_utf16_to_nls(sbi, fname->name, fname->name_len, name, PATH_MAX); if (name_len <= 0) { -- 2.39.5