Merge tag 'selinux-pr-20220203' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux

Pull selinux fix from Paul Moore:
"One small SELinux patch to ensure that a policy structure field is
properly reset after freeing so that we don't inadvertently do a
double-free on certain error conditions"

* tag 'selinux-pr-20220203' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: fix double free of cond_list on error paths

security/selinux/ss/conditional.c

···
 	for (i = 0; i < p->cond_list_len; i++)
 		cond_node_destroy(&p->cond_list[i]);
 	kfree(p->cond_list);
+	p->cond_list = NULL;
+	p->cond_list_len = 0;
 }
 
 void cond_policydb_destroy(struct policydb *p)
···
 	return 0;
 err:
 	cond_list_destroy(p);
-	p->cond_list = NULL;
 	return rc;
 }