In net/core/sock.c's sock_getsockopt, the address buffer size is
hardcoded to 128. It happens that sizeof(struct sockaddr_storage) is
indeed 128, but that is just luck and would probably not get updated
whenever sockaddr_storage would grow. This patch makes it simply use
sockaddr_storage instead.
Signed-off-by: Samuel Thibault <samuel.thiba...@ens-lyon.org>
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1155,13 +1155,13 @@ int sock_getsockopt(struct socket *sock,
case SO_PEERNAME:
{
- char address[128];
+ struct sockaddr_storage address;
- if (sock->ops->getname(sock, (struct sockaddr *)address, &lv,
2))
+ if (sock->ops->getname(sock, (struct sockaddr *)&address, &lv,
2))
return -ENOTCONN;
if (lv < len)
return -EINVAL;
- if (copy_to_user(optval, address, len))
+ if (copy_to_user(optval, &address, len))
return -EFAULT;
goto lenout;
}
--
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