diff options
Diffstat (limited to 'net/ipv4/netfilter/ipt_CLUSTERIP.c')
| -rw-r--r-- | net/ipv4/netfilter/ipt_CLUSTERIP.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/ipv4/netfilter/ipt_CLUSTERIP.c b/net/ipv4/netfilter/ipt_CLUSTERIP.c index fafe8ebb4c55..b41b9b13261f 100644 --- a/net/ipv4/netfilter/ipt_CLUSTERIP.c +++ b/net/ipv4/netfilter/ipt_CLUSTERIP.c @@ -672,8 +672,11 @@ static ssize_t clusterip_proc_write(struct file *file, const char __user *input, struct clusterip_config *c = pde->data; unsigned long nodenum; - if (copy_from_user(buffer, input, PROC_WRITELEN)) + if (size > PROC_WRITELEN) + return -EIO; + if (copy_from_user(buffer, input, size)) return -EFAULT; + buffer[size] = 0; if (*buffer == '+') { nodenum = simple_strtoul(buffer+1, NULL, 10); |