From 7a2826a2fe8f84a32e17d38b9224ad1c1165fd44 Mon Sep 17 00:00:00 2001
From: Johannes Schlatow <johannes.schlatow@genode-labs.com>
Date: Tue, 23 Nov 2021 11:42:42 +0100
Subject: [PATCH] base: fix use after free in Genode::Heap

Fixes genodelabs/genode#4334
---
 repos/base/src/lib/base/heap.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/repos/base/src/lib/base/heap.cc b/repos/base/src/lib/base/heap.cc
index fbddb84416..f7b77a6906 100644
--- a/repos/base/src/lib/base/heap.cc
+++ b/repos/base/src/lib/base/heap.cc
@@ -282,10 +282,10 @@ void Heap::free(void *addr, size_t)
 		return;
 	}
 
+	_quota_used -= ds->size;
+
 	_ds_pool.remove_and_free(*ds);
 	_alloc->free(ds);
-
-	_quota_used -= ds->size;
 }