can: Fix raw_getname() leak

raw_getname() can leak 10 bytes of kernel memory to user (two bytes hole between can_family and can_ifindex, 8 bytes at the end of sockaddr_can structure) Signed-off-by: Eric Dumazet <[email protected]> Acked-by: Oliver Hartkopp <[email protected]> Signed-off-by: David S. Miller <[email protected]>
iegor · Aug 10, 2009 · e84b90a · e84b90a
1 parent b79a794
commit e84b90a
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/net/can/raw.c b/net/can/raw.c
@@ -401,6 +401,7 @@ static int raw_getname(struct socket *sock, struct sockaddr *uaddr,
 	if (peer)
 		return -EOPNOTSUPP;
 
+	memset(addr, 0, sizeof(*addr));
 	addr->can_family  = AF_CAN;
 	addr->can_ifindex = ro->ifindex;