[PATCH 3.16 281/305] rds: fix an infoleak in rds_inc_info_copy

Ben Hutchings
2016-08-13T17:52:13Z

From: Kangjie Lu <kangjielu@gmail.com>

commit 4116def2337991b39919f3b448326e21c40e0dbb upstream.

The last field "flags" of object "minfo" is not initialized.
Copying this object out may leak kernel stack data.
Assign 0 to it to avoid leak.

Signed-off-by: Kangjie Lu <kjlu@gatech.edu>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
net/rds/recv.c | 2 ++
1 file changed, 2 insertions(+)

--- a/net/rds/recv.c
+++ b/net/rds/recv.c
@@ -543,5 +543,7 @@ void rds_inc_info_copy(struct rds_incomi
minfo.fport = inc->i_hdr.h_dport;
}

+ minfo.flags = 0;
+
rds_info_copy(iter, &minfo, sizeof(minfo));
}