diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 0de8160..0d4bff5 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -2119,6 +2119,24 @@
 	return retval;
 }
 
+static int cgroup_allow_attach(struct cgroup *cgrp, struct cgroup_taskset *tset)
+{
+	struct cgroup_subsys *ss;
+	int ret;
+
+	for_each_subsys(cgrp->root, ss) {
+		if (ss->allow_attach) {
+			ret = ss->allow_attach(cgrp, tset);
+			if (ret)
+				return ret;
+		} else {
+			return -EACCES;
+		}
+	}
+
+	return 0;
+}
+
 /*
  * Find the task_struct of the task to attach by vpid and pass it along to the
  * function to attach either it or all tasks in its threadgroup. Will lock
@@ -2150,9 +2168,18 @@
 		if (cred->euid &&
 		    cred->euid != tcred->uid &&
 		    cred->euid != tcred->suid) {
-			rcu_read_unlock();
-			ret = -EACCES;
-			goto out_unlock_cgroup;
+			/*
+			 * if the default permission check fails, give each
+			 * cgroup a chance to extend the permission check
+			 */
+			struct cgroup_taskset tset = { };
+			tset.single.task = tsk;
+			tset.single.cgrp = cgrp;
+			ret = cgroup_allow_attach(cgrp, &tset);
+			if (ret) {
+				rcu_read_unlock();
+				goto out_unlock_cgroup;
+			}
 		}
 	} else
 		tsk = current;