From: Jon Maloy <jon.maloy@ericsson.com>
To: <davem@davemloft.net>, <netdev@vger.kernel.org>
Cc: <gordan.mihaljevic@dektech.com.au>,
<tung.q.nguyen@dektech.com.au>, <hoang.h.le@dektech.com.au>,
<jon.maloy@ericsson.com>, <canh.d.luu@dektech.com.au>,
<ying.xue@windriver.com>, <tipc-discussion@lists.sourceforge.net>
Subject: [net 1/1] tipc: fix info leak from kernel tipc_event
Date: Thu, 18 Oct 2018 17:38:29 +0200 [thread overview]
Message-ID: <1539877109-7722-1-git-send-email-jon.maloy@ericsson.com> (raw)
We initialize a struct tipc_event allocated on the kernel stack to
zero to avert info leak to user space.
Reported-by: syzbot+057458894bc8cada4dee@syzkaller.appspotmail.com
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
---
net/tipc/group.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/tipc/group.c b/net/tipc/group.c
index e82f13c..06fee14 100644
--- a/net/tipc/group.c
+++ b/net/tipc/group.c
@@ -666,6 +666,7 @@ static void tipc_group_create_event(struct tipc_group *grp,
struct sk_buff *skb;
struct tipc_msg *hdr;
+ memset(&evt, 0, sizeof(evt));
evt.event = event;
evt.found_lower = m->instance;
evt.found_upper = m->instance;
--
2.1.4
next reply other threads:[~2018-10-18 23:40 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-18 15:38 Jon Maloy [this message]
2018-10-18 23:51 ` [net 1/1] tipc: fix info leak from kernel tipc_event David Miller
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