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apparmor: Fix memory leak of rule on error exit path 

Currently on the error exit path the allocated rule is not free'd
causing a memory leak. Fix this by calling aa_audit_rule_free().

Detected by CoverityScan, CID#1468966 ("Resource leaks")

Fixes: cb740f574c7b ("apparmor: modify audit rule support to support profile stacks")
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
Signed-off-by: John Johansen <john.johansen@canonical.com>
This commit is contained in:
Tyler Hicks 2018-05-17 19:53:45 +00:00 committed by John Johansen
parent 2ab47dae54
commit 52e8c38001
1 changed files with 4 additions and 2 deletions
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6
security/apparmor/audit.c
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@ -200,10 +200,12 @@ int aa_audit_rule_init(u32 field, u32 op, char *rulestr, void **vrule)
/* Currently rules are treated as coming from the root ns */
rule->label = aa_label_parse(&root_ns->unconfined->label, rulestr,
GFP_KERNEL, true, false);
if (IS_ERR(rule->label))
if (IS_ERR(rule->label)) {
aa_audit_rule_free(rule);
return PTR_ERR(rule->label);
*vrule = rule;
}
*vrule = rule;
return 0;
}