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-rw-r--r--net/can/raw.c11
1 files changed, 3 insertions, 8 deletions
diff --git a/net/can/raw.c b/net/can/raw.c
index da99cf1..ccfe633 100644
--- a/net/can/raw.c
+++ b/net/can/raw.c
@@ -436,14 +436,9 @@ static int raw_setsockopt(struct socket *sock, int level, int optname,
if (count > 1) {
/* filter does not fit into dfilter => alloc space */
- filter = kmalloc(optlen, GFP_KERNEL);
- if (!filter)
- return -ENOMEM;
-
- if (copy_from_user(filter, optval, optlen)) {
- kfree(filter);
- return -EFAULT;
- }
+ filter = memdup_user(optval, optlen);
+ if (IS_ERR(filter))
+ return PTR_ERR(filter);
} else if (count == 1) {
if (copy_from_user(&sfilter, optval, sizeof(sfilter)))
return -EFAULT;
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