netdev - [PATCH AUTOSEL 6.6 10/32] mptcp: fix uninit-value in mptcp_incoming

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <20231204203317.2092321-10-sashal@kernel.org>
Date: Mon,  4 Dec 2023 15:32:30 -0500
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Edward Adam Davis <eadavis@...com>,
	syzbot+b834a6b2decad004cfa1@...kaller.appspotmail.com,
	Paolo Abeni <pabeni@...hat.com>,
	"David S . Miller" <davem@...emloft.net>,
	Sasha Levin <sashal@...nel.org>,
	matttbe@...nel.org,
	martineau@...nel.org,
	edumazet@...gle.com,
	kuba@...nel.org,
	netdev@...r.kernel.org,
	mptcp@...ts.linux.dev
Subject: [PATCH AUTOSEL 6.6 10/32] mptcp: fix uninit-value in mptcp_incoming_options

From: Edward Adam Davis <eadavis@...com>

[ Upstream commit 237ff253f2d4f6307b7b20434d7cbcc67693298b ]

Added initialization use_ack to mptcp_parse_option().

Reported-by: syzbot+b834a6b2decad004cfa1@...kaller.appspotmail.com
Signed-off-by: Edward Adam Davis <eadavis@...com>
Acked-by: Paolo Abeni <pabeni@...hat.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 net/mptcp/options.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/mptcp/options.c b/net/mptcp/options.c
index cd15ec73073e0..c53914012d01d 100644
--- a/net/mptcp/options.c
+++ b/net/mptcp/options.c
@@ -108,6 +108,7 @@ static void mptcp_parse_option(const struct sk_buff *skb,
 			mp_opt->suboptions |= OPTION_MPTCP_DSS;
 			mp_opt->use_map = 1;
 			mp_opt->mpc_map = 1;
+			mp_opt->use_ack = 0;
 			mp_opt->data_len = get_unaligned_be16(ptr);
 			ptr += 2;
 		}
-- 
2.42.0