diff --git a/NEWS b/NEWS
index 9a740d450c9..9bf3d19620f 100644
--- a/NEWS
+++ b/NEWS
@@ -26,6 +26,8 @@ PHP                                                                        NEWS
   . Adjusted closure names to include the parent function's name. (timwolla)
   . Improve randomness of uploaded file names and files created by tempnam().
     (Arnaud)
+  . Fixed bug GH-14510 (memleak due to missing pthread_attr_destroy()-call).
+    (Florian Engelhardt)
 
 - Curl:
   . Deprecated the CURLOPT_BINARYTRANSFER constant. (divinity76)
@@ -196,7 +198,7 @@ PHP                                                                        NEWS
   . Added class Pdo\Pgsql. (danack, kocsismate)
   . Retrieve the memory usage of the query result resource. (KentarouTakeda)
   . Added Pdo\Pgsql::setNoticeCallBack method to receive DB notices.
-    (outtersg) 
+    (outtersg)
 
 - PDO_SQLITE:
   . Added class Pdo\Sqlite. (danack, kocsismate)
diff --git a/Zend/zend_call_stack.c b/Zend/zend_call_stack.c
index cc10a2aa309..4228e2e75a9 100644
--- a/Zend/zend_call_stack.c
+++ b/Zend/zend_call_stack.c
@@ -139,6 +139,7 @@ static bool zend_call_stack_get_linux_pthread(zend_call_stack *stack)
 
 	error = pthread_attr_getstack(&attr, &addr, &max_size);
 	if (error) {
+		pthread_attr_destroy(&attr);
 		return false;
 	}
 
@@ -148,6 +149,7 @@ static bool zend_call_stack_get_linux_pthread(zend_call_stack *stack)
 		/* In glibc prior to 2.8, addr and size include the guard pages */
 		error = pthread_attr_getguardsize(&attr, &guard_size);
 		if (error) {
+			pthread_attr_destroy(&attr);
 			return false;
 		}
 
@@ -159,6 +161,8 @@ static bool zend_call_stack_get_linux_pthread(zend_call_stack *stack)
 	stack->base = (int8_t*)addr + max_size;
 	stack->max_size = max_size;
 
+	pthread_attr_destroy(&attr);
+
 	return true;
 }
 # else /* defined(HAVE_PTHREAD_GETATTR_NP) && defined(HAVE_PTHREAD_ATTR_GETSTACK) */