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

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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>
This commit is contained in:
Pablo Neira Ayuso 2013-03-23 16:57:59 +01:00
parent 558724a5b2
commit deadcfc332
1 changed files with 2 additions and 0 deletions
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2
net/netfilter/nfnetlink_acct.c
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@ -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)