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-rw-r--r--drivers/isdn/i4l/isdn_ppp.c11
1 files changed, 3 insertions, 8 deletions
diff --git a/drivers/isdn/i4l/isdn_ppp.c b/drivers/isdn/i4l/isdn_ppp.c
index f37b8f6..8c46bae 100644
--- a/drivers/isdn/i4l/isdn_ppp.c
+++ b/drivers/isdn/i4l/isdn_ppp.c
@@ -449,14 +449,9 @@ static int get_filter(void __user *arg, struct sock_filter **p)
/* uprog.len is unsigned short, so no overflow here */
len = uprog.len * sizeof(struct sock_filter);
- code = kmalloc(len, GFP_KERNEL);
- if (code == NULL)
- return -ENOMEM;
-
- if (copy_from_user(code, uprog.filter, len)) {
- kfree(code);
- return -EFAULT;
- }
+ code = memdup_user(uprog.filter, len);
+ if (IS_ERR(code))
+ return PTR_ERR(code);
err = sk_chk_filter(code, uprog.len);
if (err) {