netrom: fix copying in user data in nr_setsockopt

This code used to copy in an unsigned long worth of data before the sockptr_t conversion, so restore that. Fixes: a7b75c5 ("net: pass a sockptr_t into ->setsockopt") Reported-by: Dan Carpenter <[email protected]> Signed-off-by: Christoph Hellwig <[email protected]> Signed-off-by: David S. Miller <[email protected]>
kawasaki · Jan 4, 2022 · 3087a6f · 3087a6f
1 parent d2d9a6d
commit 3087a6f
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c
@@ -306,7 +306,7 @@ static int nr_setsockopt(struct socket *sock, int level, int optname,
 	if (optlen < sizeof(unsigned int))
 		return -EINVAL;
 
-	if (copy_from_sockptr(&opt, optval, sizeof(unsigned int)))
+	if (copy_from_sockptr(&opt, optval, sizeof(unsigned long)))
 		return -EFAULT;
 
 	switch (optname) {