diff --git a/repos/ports/ports/virtualbox5.hash b/repos/ports/ports/virtualbox5.hash
index d9e88a1496..156ce2a0aa 100644
--- a/repos/ports/ports/virtualbox5.hash
+++ b/repos/ports/ports/virtualbox5.hash
@@ -1 +1 @@
-218d93225ef6a41885a6b0a623d8004a590b4f7a
+b133c6dd40d51e4cbd0d8906f3f7ff5a57f8a7bf
diff --git a/repos/ports/src/virtualbox5/patches/microcode.patch b/repos/ports/src/virtualbox5/patches/microcode.patch
new file mode 100644
index 0000000000..e7593f3bdc
--- /dev/null
+++ b/repos/ports/src/virtualbox5/patches/microcode.patch
@@ -0,0 +1,11 @@
+--- a/src/app/virtualbox/src/VBox/VMM/VMMAll/CPUMAllMsrs.cpp
+--- b/src/app/virtualbox/src/VBox/VMM/VMMAll/CPUMAllMsrs.cpp
+@@ -251,6 +251,8 @@
+     RT_NOREF_PV(pVCpu); RT_NOREF_PV(idMsr); RT_NOREF_PV(pRange);
+     /** @todo fake microcode update. */
+     *puValue = pRange->uValue;
++    *puValue = ~0ULL;
++    RTLogPrintf("%s: overwrite %llx->%llx to avoid endless microcode patch loop\n", __func__, pRange->uValue, *puValue);
+     return VINF_SUCCESS;
+ }
+ 
diff --git a/repos/ports/src/virtualbox5/patches/series b/repos/ports/src/virtualbox5/patches/series
index 93c48641fa..88ec4c0cf1 100644
--- a/repos/ports/src/virtualbox5/patches/series
+++ b/repos/ports/src/virtualbox5/patches/series
@@ -12,3 +12,4 @@ mm.patch
 substr.patch
 vusburb.patch
 audio.patch
+microcode.patch