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 A7D217762F; Wed, 21 Feb 2024 13:20:03 +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=1708521603; cv=none; b=jPjcxglISYOy69DnyLrjla5Lu0sbn0yVTdHODQ48Tp6yAarTLJzaGI8dz4yOli4CEEbxGFUcRwTpySjUF+zi61kjdlZ40xeg3xUWcF+Ejv52DSFQCdYgLuW+9qw0a34Oawx5jdIGqi3Gnw71qTKyKA6E+PHy6przRfUckMeRGbY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708521603; c=relaxed/simple; bh=12910xynjxCnlWv7k/gyJSFzoF0Qo/6zl8w4zwE4zrY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=o5MRozvUOArLXbzYfEYXStGYaLz/KcXlHYSJFgfbujyOCbXV4GNtvkYJkBdQAcFsYA1vOEE1xbk5DpNOlgIxH622Lx3fmqCZ4i14eG1YflO3qSXRuKVQftjhMbwdDSuodjPSSZhnlYmso5nka/a+CTltVzK/c2nN30QxuM4wzAA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=dteaVfvR; 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="dteaVfvR" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 15B42C433C7; Wed, 21 Feb 2024 13:20:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1708521603; bh=12910xynjxCnlWv7k/gyJSFzoF0Qo/6zl8w4zwE4zrY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dteaVfvRnmziVJ6K05PTwsfrmc+d8KLqYNSiud+rFDnLqVpVMDN0sDRZri5hv/0gv heXkXrefX36/PmUM7w/Y9yATLcC+1j9Z31xXbFEHMQaX331KWY5gqvXn/GNVACB54r psb/6CF5nk/O1YPzF6jZFMotBl22nVScbNURt6wI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Pablo Neira Ayuso , Sasha Levin Subject: [PATCH 4.19 156/202] netfilter: nft_compat: reject unused compat flag Date: Wed, 21 Feb 2024 14:07:37 +0100 Message-ID: <20240221125936.731574193@linuxfoundation.org> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240221125931.742034354@linuxfoundation.org> References: <20240221125931.742034354@linuxfoundation.org> User-Agent: quilt/0.67 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 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Pablo Neira Ayuso [ Upstream commit 292781c3c5485ce33bd22b2ef1b2bed709b4d672 ] Flag (1 << 0) is ignored is set, never used, reject it it with EINVAL instead. Fixes: 0ca743a55991 ("netfilter: nf_tables: add compatibility layer for x_tables") Signed-off-by: Pablo Neira Ayuso Signed-off-by: Sasha Levin --- include/uapi/linux/netfilter/nf_tables.h | 2 ++ net/netfilter/nft_compat.c | 3 ++- 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/include/uapi/linux/netfilter/nf_tables.h b/include/uapi/linux/netfilter/nf_tables.h index cc00be102b9f..39774870c864 100644 --- a/include/uapi/linux/netfilter/nf_tables.h +++ b/include/uapi/linux/netfilter/nf_tables.h @@ -238,9 +238,11 @@ enum nft_rule_attributes { /** * enum nft_rule_compat_flags - nf_tables rule compat flags * + * @NFT_RULE_COMPAT_F_UNUSED: unused * @NFT_RULE_COMPAT_F_INV: invert the check result */ enum nft_rule_compat_flags { + NFT_RULE_COMPAT_F_UNUSED = (1 << 0), NFT_RULE_COMPAT_F_INV = (1 << 1), NFT_RULE_COMPAT_F_MASK = NFT_RULE_COMPAT_F_INV, }; diff --git a/net/netfilter/nft_compat.c b/net/netfilter/nft_compat.c index 2846d64659f2..95af1dbc28c1 100644 --- a/net/netfilter/nft_compat.c +++ b/net/netfilter/nft_compat.c @@ -207,7 +207,8 @@ static int nft_parse_compat(const struct nlattr *attr, u16 *proto, bool *inv) return -EINVAL; flags = ntohl(nla_get_be32(tb[NFTA_RULE_COMPAT_FLAGS])); - if (flags & ~NFT_RULE_COMPAT_F_MASK) + if (flags & NFT_RULE_COMPAT_F_UNUSED || + flags & ~NFT_RULE_COMPAT_F_MASK) return -EINVAL; if (flags & NFT_RULE_COMPAT_F_INV) *inv = true; -- 2.43.0