Explain disk image probing changes

Closes: #594962

debian/libvirt-bin.NEWS

@@ -7,3 +7,19 @@ libvirt (0.8.1-2) unstable; urgency=low
   anything.
 
  -- Guido Günther <agx@sigxcpu.org>  Mon, 12 Jul 2010 19:58:35 +0200
+
+libvirt (0.8.3-2) unstable; urgency=low
+
+  Disk format probing is disabled now by default for security reasons
+  (CVE-2010-2237). You need to explicitly add a driver type element to your
+  disk devices in the domain XML:
+
+      <disk ...>
+         <driver name='qemu' type='qcow2'/>
+         ...
+      </disk>
+
+  Alternatively you can reenable probing by setting allow_disk_format_probing=1
+  in /etc/libvirt/qemu.conf but this is insecure.
+
+ -- Guido Günther <agx@sigxcpu.org>  Wed, 29 Sep 2010 13:10:02 +0200