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Subject[PATCH] tipc: fix an infoleak in tipc_nl_compat_link_dump
Date
link_info.str is a char array of size 60. Memory after the NULL
byte is not initialized. Sending the whole object out can cause
a leak.

Signed-off-by: Kangjie Lu <kjlu@gatech.edu>
---
net/tipc/netlink_compat.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/net/tipc/netlink_compat.c b/net/tipc/netlink_compat.c
index f795b1d..115aafa 100644
--- a/net/tipc/netlink_compat.c
+++ b/net/tipc/netlink_compat.c
@@ -604,6 +604,7 @@ static int tipc_nl_compat_link_dump(struct tipc_nl_compat_msg *msg,

link_info.dest = nla_get_flag(link[TIPC_NLA_LINK_DEST]);
link_info.up = htonl(nla_get_flag(link[TIPC_NLA_LINK_UP]));
+ memset((void *)link_info.str, 0, TIPC_MAX_LINK_NAME);
strcpy(link_info.str, nla_data(link[TIPC_NLA_LINK_NAME]));

return tipc_add_tlv(msg->rep, TIPC_TLV_LINK_INFO,
--
2.7.4
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