From: Dan Rosenberg <drosenberg@vsecurity.com>
To: "David S. Miller" <davem@davemloft.net>,
Oliver Hartkopp <socketcan@hartkopp.net>,
Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>,
Urs Thuermann <urs.thuermann@volkswagen.de>,
Hideaki YOSHI
Subject: [PATCH 5/10] Fix leaking of kernel heap addresses in net/
Date: Thu, 11 Nov 2010 20:07:09 -0500 [thread overview]
Message-ID: <1289524029.5167.69.camel@dan> (raw)
diff --git a/net/key/af_key.c b/net/key/af_key.c
index d87c22d..977481a 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -3643,14 +3643,25 @@ static int pfkey_seq_show(struct seq_file *f, void *v)
if (v == SEQ_START_TOKEN)
seq_printf(f ,"sk RefCnt Rmem Wmem User Inode\n");
else
- seq_printf(f ,"%p %-6d %-6u %-6u %-6u %-6lu\n",
- s,
- atomic_read(&s->sk_refcnt),
- sk_rmem_alloc_get(s),
- sk_wmem_alloc_get(s),
- sock_i_uid(s),
- sock_i_ino(s)
- );
+ /* Only expose kernel addresses to privileged readers */
+ if (capable(CAP_NET_ADMIN))
+ seq_printf(f, "%p %-6d %-6u %-6u %-6u %-6lu\n",
+ s,
+ atomic_read(&s->sk_refcnt),
+ sk_rmem_alloc_get(s),
+ sk_wmem_alloc_get(s),
+ sock_i_uid(s),
+ sock_i_ino(s)
+ );
+ else
+ seq_printf(f, "%d %-6d %-6u %-6u %-6u %-6lu\n",
+ 0,
+ atomic_read(&s->sk_refcnt),
+ sk_rmem_alloc_get(s),
+ sk_wmem_alloc_get(s),
+ sock_i_uid(s),
+ sock_i_ino(s)
+ );
return 0;
}
reply other threads:[~2010-11-12 1:08 UTC|newest]
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