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tipc: fix info leak from kernel tipc_event

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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>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jon Maloy 2018-10-18 17:38:29 +02:00 committed by David S. Miller
parent b6168562c8
commit b06f9d9f1a
1 changed files with 1 additions and 0 deletions
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1
net/tipc/group.c
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@ -666,6 +666,7 @@ static void tipc_group_create_event(struct tipc_group *grp,
struct sk_buff *skb; struct sk_buff *skb;
struct tipc_msg *hdr; struct tipc_msg *hdr;
memset(&evt, 0, sizeof(evt));
evt.event = event; evt.event = event;
evt.found_lower = m->instance; evt.found_lower = m->instance;
evt.found_upper = m->instance; evt.found_upper = m->instance;