File CVE-2013-4529-02-qemuu-pci-fix-buffer-overrun-on-invalid-state-load.patch of Package xen.7673

References: bsc#964929 CVE-2013-4529

Subject: vmstate: add VMSTATE_VALIDATE
From: Michael S. Tsirkin mst@redhat.com Thu Apr 3 19:50:35 2014 +0300
Date: Mon May 5 14:15:10 2014 +0200:
Git: 4082f0889ba04678fc14816c53e1b9251ea9207e

Validate state using VMS_ARRAY with num = 0 and VMS_MUST_EXIST

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>

Index: xen-4.4.4-testing/tools/qemu-xen-dir-remote/include/migration/vmstate.h
===================================================================
--- xen-4.4.4-testing.orig/tools/qemu-xen-dir-remote/include/migration/vmstate.h
+++ xen-4.4.4-testing/tools/qemu-xen-dir-remote/include/migration/vmstate.h
@@ -204,6 +204,14 @@ extern const VMStateInfo vmstate_info_bi
     .offset       = vmstate_offset_value(_state, _field, _type),     \
 }
 
+/* Validate state using a boolean predicate. */
+#define VMSTATE_VALIDATE(_name, _test) { \
+    .name         = (_name),                                         \
+    .field_exists = (_test),                                         \
+    .flags        = VMS_ARRAY | VMS_MUST_EXIST,                      \
+    .num          = 0, /* 0 elements: no data, only run _test */     \
+}
+
 #define VMSTATE_POINTER(_field, _state, _version, _info, _type) {    \
     .name       = (stringify(_field)),                               \
     .version_id = (_version),                                        \