linux-kernel-mentees.lists.linuxfoundation.org archive mirror
 help / color / mirror / Atom feed
From: Peilin Ye <yepeilin.cs@gmail.com>
To: Wensong Zhang <wensong@linux-vs.org>,
	Simon Horman <horms@verge.net.au>, Julian Anastasov <ja@ssi.bg>
Cc: Florian Westphal <fw@strlen.de>,
	linux-kernel@vger.kernel.org, Peilin Ye <yepeilin.cs@gmail.com>,
	lvs-devel@vger.kernel.org, coreteam@netfilter.org,
	netfilter-devel@vger.kernel.org, netdev@vger.kernel.org,
	Jakub Kicinski <kuba@kernel.org>,
	syzkaller-bugs@googlegroups.com,
	Jozsef Kadlecsik <kadlec@netfilter.org>,
	linux-kernel-mentees@lists.linuxfoundation.org,
	"David S. Miller" <davem@davemloft.net>,
	Pablo Neira Ayuso <pablo@netfilter.org>
Subject: [Linux-kernel-mentees] [PATCH net] ipvs: Fix uninit-value in do_ip_vs_set_ctl()
Date: Mon, 10 Aug 2020 18:07:03 -0400	[thread overview]
Message-ID: <20200810220703.796718-1-yepeilin.cs@gmail.com> (raw)

do_ip_vs_set_ctl() is referencing uninitialized stack value when `len` is
zero. Fix it.

Reported-and-tested-by: syzbot+23b5f9e7caf61d9a3898@syzkaller.appspotmail.com
Link: https://syzkaller.appspot.com/bug?id=46ebfb92a8a812621a001ef04d90dfa459520fe2
Signed-off-by: Peilin Ye <yepeilin.cs@gmail.com>
---
 net/netfilter/ipvs/ip_vs_ctl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
index 412656c34f20..c050b6a42786 100644
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c
@@ -2418,7 +2418,7 @@ do_ip_vs_set_ctl(struct sock *sk, int cmd, void __user *user, unsigned int len)
 {
 	struct net *net = sock_net(sk);
 	int ret;
-	unsigned char arg[MAX_SET_ARGLEN];
+	unsigned char arg[MAX_SET_ARGLEN] = {};
 	struct ip_vs_service_user *usvc_compat;
 	struct ip_vs_service_user_kern usvc;
 	struct ip_vs_service *svc;
-- 
2.25.1

_______________________________________________
Linux-kernel-mentees mailing list
Linux-kernel-mentees@lists.linuxfoundation.org
https://lists.linuxfoundation.org/mailman/listinfo/linux-kernel-mentees

             reply	other threads:[~2020-08-10 22:09 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-10 22:07 Peilin Ye [this message]
2020-08-11  3:57 ` Cong Wang
2020-08-11  5:09   ` Peilin Ye
2020-08-11  6:58     ` Julian Anastasov
2020-08-11  7:19       ` Peilin Ye
2020-08-11  7:46 ` [Linux-kernel-mentees] [PATCH net-next v2] " Peilin Ye
2020-08-11 10:29   ` Julian Anastasov
2020-08-11 12:59     ` Simon Horman
2020-08-13  1:28       ` Pablo Neira Ayuso
2020-08-28 17:21   ` Pablo Neira Ayuso

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200810220703.796718-1-yepeilin.cs@gmail.com \
    --to=yepeilin.cs@gmail.com \
    --cc=coreteam@netfilter.org \
    --cc=davem@davemloft.net \
    --cc=fw@strlen.de \
    --cc=horms@verge.net.au \
    --cc=ja@ssi.bg \
    --cc=kadlec@netfilter.org \
    --cc=kuba@kernel.org \
    --cc=linux-kernel-mentees@lists.linuxfoundation.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=lvs-devel@vger.kernel.org \
    --cc=netdev@vger.kernel.org \
    --cc=netfilter-devel@vger.kernel.org \
    --cc=pablo@netfilter.org \
    --cc=syzkaller-bugs@googlegroups.com \
    --cc=wensong@linux-vs.org \
    --subject='Re: [Linux-kernel-mentees] [PATCH net] ipvs: Fix uninit-value in do_ip_vs_set_ctl()' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).