]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commitdiff
net/rds: Fix info leak in rds6_inc_info_copy()
authorKa-Cheong Poon <ka-cheong.poon@oracle.com>
Mon, 26 Aug 2019 09:39:12 +0000 (02:39 -0700)
committerDavid S. Miller <davem@davemloft.net>
Wed, 28 Aug 2019 03:56:06 +0000 (20:56 -0700)
The rds6_inc_info_copy() function has a couple struct members which
are leaking stack information.  The ->tos field should hold actual
information and the ->flags field needs to be zeroed out.

Fixes: 3eb450367d08 ("rds: add type of service(tos) infrastructure")
Fixes: b7ff8b1036f0 ("rds: Extend RDS API for IPv6 support")
Reported-by: 黄ID蝴蝶 <butterflyhuangxx@gmail.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Ka-Cheong Poon <ka-cheong.poon@oracle.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/rds/recv.c

index 853de48760880603bf60142700cd668100ca289e..a42ba7fa06d5d0a04e9829ffdf5561c3e648353a 100644 (file)
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006, 2018 Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2006, 2019 Oracle and/or its affiliates. All rights reserved.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
@@ -811,6 +811,7 @@ void rds6_inc_info_copy(struct rds_incoming *inc,
 
        minfo6.seq = be64_to_cpu(inc->i_hdr.h_sequence);
        minfo6.len = be32_to_cpu(inc->i_hdr.h_len);
+       minfo6.tos = inc->i_conn->c_tos;
 
        if (flip) {
                minfo6.laddr = *daddr;
@@ -824,6 +825,8 @@ void rds6_inc_info_copy(struct rds_incoming *inc,
                minfo6.fport = inc->i_hdr.h_dport;
        }
 
+       minfo6.flags = 0;
+
        rds_info_copy(iter, &minfo6, sizeof(minfo6));
 }
 #endif