From: Pablo Neira Ayuso <pablo@netfilter.org>
Date: Sat, 23 Mar 2013 15:57:59 +0000 (+0100)
Subject: netfilter: nfnetlink_acct: return -EINVAL if object name is empty
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=deadcfc3324410726cd6a663fb4fc46be595abe7;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

netfilter: nfnetlink_acct: return -EINVAL if object name is empty

If user-space tries to create accounting object with an empty
name, then return -EINVAL.

Reported-by: Michael Zintakis <michael.zintakis@googlemail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---

diff --git a/net/netfilter/nfnetlink_acct.c b/net/netfilter/nfnetlink_acct.c
index 589d686f0b4c..dc3fd5d44464 100644
--- a/net/netfilter/nfnetlink_acct.c
+++ b/net/netfilter/nfnetlink_acct.c
@@ -49,6 +49,8 @@ nfnl_acct_new(struct sock *nfnl, struct sk_buff *skb,
 		return -EINVAL;
 
 	acct_name = nla_data(tb[NFACCT_NAME]);
+	if (strlen(acct_name) == 0)
+		return -EINVAL;
 
 	list_for_each_entry(nfacct, &nfnl_acct_list, head) {
 		if (strncmp(nfacct->name, acct_name, NFACCT_NAME_MAX) != 0)