summaryrefslogtreecommitdiff
path: root/net/compat.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/compat.c')
-rw-r--r--net/compat.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/net/compat.c b/net/compat.c
index 478443182bbe..13c0c9a25cd9 100644
--- a/net/compat.c
+++ b/net/compat.c
@@ -49,6 +49,13 @@ ssize_t get_compat_msghdr(struct msghdr *kmsg,
__get_user(kmsg->msg_controllen, &umsg->msg_controllen) ||
__get_user(kmsg->msg_flags, &umsg->msg_flags))
return -EFAULT;
+
+ if (!uaddr)
+ kmsg->msg_namelen = 0;
+
+ if (kmsg->msg_namelen < 0)
+ return -EINVAL;
+
if (kmsg->msg_namelen > sizeof(struct sockaddr_storage))
kmsg->msg_namelen = sizeof(struct sockaddr_storage);
kmsg->msg_control = compat_ptr(tmp3);