From nobody Mon Feb 9 12:01:00 2026 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 10D0160DD6; Wed, 13 Mar 2024 16:33:15 +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=1710347596; cv=none; b=hUKCiuNIpEzfveXJ8+V8pxBKf5HjApRPYTB+YaxaL7WbTf6M1N66p2LJ1ZpNK3hMwaxSwXmGjmPvbpwhUxiNphNrFB2tN/dt511bShMFRgLo6hEB+Fzv2dvcRuk7P4nFv4VPAuHSclQ8k3x2arC5n13TDeiKGUyi9RDp1kLBi0U= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710347596; c=relaxed/simple; bh=VQ7lua7WzcnMrXcBFn4KATcpoXmgnrHjWM09UbvwGTY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=F15KFco0Ydhxe8ZkGN+5dpxiV1pgxRUHciKhKTw5oV53uasbzjK0EB45LTGCGx+TJJkF9fANowJI9YYAr45sSXHlxCem7cjQdZZM5MmPyuk7qfbaDKgZX6xZjOCPKX5kaIptbrGFqGqLAuXggNa3dPmFut8Hr9eyKab/cYf6P6c= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=pFPzA4Fz; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="pFPzA4Fz" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D8CB5C43390; Wed, 13 Mar 2024 16:33:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1710347595; bh=VQ7lua7WzcnMrXcBFn4KATcpoXmgnrHjWM09UbvwGTY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pFPzA4FzCPPxwO1u2gfbejxOHYu0fW4z6rkxNVGD7xe3s3sfYOMs+EU17X4qBjwmc EqzPmgLR/NvrTYwYlD1v3AJ9ItmbwImxPJxf7KZylMH2zRTxGP7e564v2vjqikcLbR Ef0GOHvBIV6mFN8qgixHSn004GRbtP5vpL0q44aYGUVZulG79/4Qt9FQscBqO05iD+ SuhVrdrFRqnh27NAWOusVLl4Sg1PyO8+nbCapTwCsn2DAdJQyY5TfYBIeGdftovFbn VmwDnx8xwh0N1esAdEru6eIKvs5mGHraFQLe4GifNvhDIPDBZPPrSvHa6uiEwynHLV pT6p4zv5Hy+aA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Rand Deeb , Simon Horman , Tony Nguyen , Sasha Levin Subject: [PATCH 6.7 30/61] net: ice: Fix potential NULL pointer dereference in ice_bridge_setlink() Date: Wed, 13 Mar 2024 12:32:05 -0400 Message-ID: <20240313163236.613880-31-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240313163236.613880-1-sashal@kernel.org> References: <20240313163236.613880-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-KernelTest-Patch: http://kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.7.10-rc1.gz X-KernelTest-Tree: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git X-KernelTest-Branch: linux-6.7.y X-KernelTest-Patches: git://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git X-KernelTest-Version: 6.7.10-rc1 X-KernelTest-Deadline: 2024-03-15T16:32+00:00 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Rand Deeb [ Upstream commit 06e456a05d669ca30b224b8ed962421770c1496c ] The function ice_bridge_setlink() may encounter a NULL pointer dereference if nlmsg_find_attr() returns NULL and br_spec is dereferenced subsequently in nla_for_each_nested(). To address this issue, add a check to ensure that br_spec is not NULL before proceeding with the nested attribute iteration. Fixes: b1edc14a3fbf ("ice: Implement ice_bridge_getlink and ice_bridge_setl= ink") Signed-off-by: Rand Deeb Reviewed-by: Simon Horman Signed-off-by: Tony Nguyen Signed-off-by: Sasha Levin --- drivers/net/ethernet/intel/ice/ice_main.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethern= et/intel/ice/ice_main.c index adfdea1e2805a..a9cca2d24120a 100644 --- a/drivers/net/ethernet/intel/ice/ice_main.c +++ b/drivers/net/ethernet/intel/ice/ice_main.c @@ -7800,6 +7800,8 @@ ice_bridge_setlink(struct net_device *dev, struct nlm= sghdr *nlh, pf_sw =3D pf->first_sw; /* find the attribute in the netlink message */ br_spec =3D nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); + if (!br_spec) + return -EINVAL; =20 nla_for_each_nested(attr, br_spec, rem) { __u16 mode; --=20 2.43.0