diff options
| -rw-r--r-- | net/socket.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/net/socket.c b/net/socket.c index 49917a1cac7d..41e8847508aa 100644 --- a/net/socket.c +++ b/net/socket.c @@ -2098,12 +2098,17 @@ SYSCALL_DEFINE2(socketcall, int, call, unsigned long __user *, args) unsigned long a[6]; unsigned long a0, a1; int err; + unsigned int len; if (call < 1 || call > SYS_ACCEPT4) return -EINVAL; + len = nargs[call]; + if (len > sizeof(a)) + return -EINVAL; + /* copy_from_user should be SMP safe. */ - if (copy_from_user(a, args, nargs[call])) + if (copy_from_user(a, args, len)) return -EFAULT; audit_socketcall(nargs[call] / sizeof(unsigned long), a); |