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 77405335BAA; Mon, 18 Aug 2025 13:20:09 +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=1755523209; cv=none; b=bq12khwXH8NmkmTFSvSPcTyX51zll/gpoAy/jOC4hUdBLkgAEKovlchKQeT0jTbhyO52AqhAQtxfOMOtlt3HHsoyeDxoR3wca1vd+s5rIb6YKIgN6JFVbdWlWDdoz/aCpf/6OHQJtpvo64S0lAnp7nQ8GP9a2czhu2JY5cEwcO8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755523209; c=relaxed/simple; bh=ehqhilSCW861FksQQawIrBpbwS6bD1Z+a0EjkUwTY5s=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ZScfZT3UsdzO+umfKTR6IhMLbjON5lmUVrb79Li7+4Hduv+3iTJHQFK6aUale6XLcpb/4r7RuknDuWGkkatRcCRAOsWNWT0KdtOnNYHZRKZ0ClUfrFNjCXxR0SLQC5i1xgl4+CDSOcw5euW7tON3Xdlts73c2aS86EwWociXmgw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=gqm9Z8f3; 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="gqm9Z8f3" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E7D49C4CEEB; Mon, 18 Aug 2025 13:20:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1755523209; bh=ehqhilSCW861FksQQawIrBpbwS6bD1Z+a0EjkUwTY5s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gqm9Z8f3EdrFIu9vun3cmwnS8MKdjEbrBOISyx2fN65JqW0nTHXFSe/PzrGZZ7Iww pYsuvRoa2pOjt5tqVtZR82qRjzWIBUnfBsn3tHztcsmBd9iHFdxN8MwBjF4KHs5Ats 6E+skbhRSNC65auJtxX0QLQ4+rSPddTPjtrtihq8= 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 6.15 103/515] fs/ntfs3: Add sanity check for file name Date: Mon, 18 Aug 2025 14:41:29 +0200 Message-ID: <20250818124502.334357086@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250818124458.334548733@linuxfoundation.org> References: <20250818124458.334548733@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 6.15-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