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netrom: Fix nr_getname() leak

PATCH Applied Eric Dumazet 2 participants 2 messages Aug 6, 2009

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Eric Dumazet

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PATCH 1/1 netrom: Fix nr_getname() leak

nr_getname() can leak kernel memory to user.

Signed-off-by Eric Dumazet <[email protected]>

---

net/netrom/af_netrom.c +1 -0
index ce51ce0..ce1a34b 100644
@@ -847,6 +847,7 @@ static int nr_getname(struct socket *sock, struct sockaddr *uaddr,
 		sax->fsa_ax25.sax25_family = AF_NETROM;
 		sax->fsa_ax25.sax25_ndigis = 1;
 		sax->fsa_ax25.sax25_call   = nr->user_addr;
+		memset(sax->fsa_digipeater, 0, sizeof(sax->fsa_digipeater));
 		sax->fsa_digipeater[0]     = nr->dest_addr;
 		*uaddr_len = sizeof(struct full_sockaddr_ax25);
 	} else {