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Smack: ipv6 label match fix

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The check for a deleted entry in the list of IPv6 host
addresses was being performed in the wrong place, leading
to most peculiar results in some cases. This puts the
check into the right place.

Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
This commit is contained in:
Casey Schaufler 2016-11-07 19:01:09 -08:00
parent b437aba85b
commit 2e4939f702
1 changed files with 6 additions and 6 deletions
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12
security/smack/smack_lsm.c
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@ -2443,18 +2443,18 @@ static struct smack_known *smack_ipv6host_label(struct sockaddr_in6 *sip)
return NULL;
list_for_each_entry_rcu(snp, &smk_net6addr_list, list) {
/*
* If the label is NULL the entry has
* been renounced. Ignore it.
*/
if (snp->smk_label == NULL)
continue;
/*
* we break after finding the first match because
* the list is sorted from longest to shortest mask
* so we have found the most specific match
*/
for (found = 1, i = 0; i < 8; i++) {
/*
* If the label is NULL the entry has
* been renounced. Ignore it.
*/
if (snp->smk_label == NULL)
continue;
if ((sap->s6_addr16[i] & snp->smk_mask.s6_addr16[i]) !=
snp->smk_host.s6_addr16[i]) {
found = 0;