3.5.7.28 -stable review patch. If anyone has any objections, please let me
know.
------------------
From: Hannes Frederic Sowa <han...@stressinduktion.org>
commit 68c6beb373955da0886d8f4f5995b3922ceda4be upstream.
In that case it is probable that kernel code overwrote part of the
stack. So we should bail out loudly here.
The BUG_ON may be removed in future if we are sure all protocols are
conformant.
Suggested-by: Eric Dumazet <eric.duma...@gmail.com>
Signed-off-by: Hannes Frederic Sowa <han...@stressinduktion.org>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Luis Henriques <luis.henriq...@canonical.com>
---
net/socket.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/socket.c b/net/socket.c
index 496702e..5febb56 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -215,12 +215,13 @@ static int move_addr_to_user(struct sockaddr_storage
*kaddr, int klen,
int err;
int len;
+ BUG_ON(klen > sizeof(struct sockaddr_storage));
err = get_user(len, ulen);
if (err)
return err;
if (len > klen)
len = klen;
- if (len < 0 || len > sizeof(struct sockaddr_storage))
+ if (len < 0)
return -EINVAL;
if (len) {
if (audit_sockaddr(klen, kaddr))
--
1.8.3.2
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