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Subject[PATCH 5.15 11/72] netrom: fix copying in user data in nr_setsockopt
Date
From: Christoph Hellwig <hch@lst.de>

commit 3087a6f36ee028ec095c04a8531d7d33899b7fed upstream.

This code used to copy in an unsigned long worth of data before
the sockptr_t conversion, so restore that.

Fixes: a7b75c5a8c41 ("net: pass a sockptr_t into ->setsockopt")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/netrom/af_netrom.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/netrom/af_netrom.c
+++ b/net/netrom/af_netrom.c
@@ -306,7 +306,7 @@ static int nr_setsockopt(struct socket *
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) {

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