diff options
| -rw-r--r-- | net/bpfilter/bpfilter_kern.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/net/bpfilter/bpfilter_kern.c b/net/bpfilter/bpfilter_kern.c index 78d561f2c54d..00540457e5f4 100644 --- a/net/bpfilter/bpfilter_kern.c +++ b/net/bpfilter/bpfilter_kern.c @@ -70,6 +70,10 @@ static int bpfilter_process_sockopt(struct sock *sk, int optname, .addr = (uintptr_t)optval, .len = optlen, }; + if (uaccess_kernel()) { + pr_err("kernel access not supported\n"); + return -EFAULT; + } return bpfilter_send_req(&req); } |