On 7/27/20 10:04 AM, Peter Krempa wrote:
On Mon, Jul 27, 2020 at 09:54:50 +0200, Michal Privoznik wrote:
Document the fix of leaking /dev/mapper/control to QEMU (fixed in
v6.6.0-rc1-3-g2249455654).
Signed-off-by: Michal Privoznik <mprivozn@xxxxxxxxxx>
---
NEWS.rst | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/NEWS.rst b/NEWS.rst
index ff977968c7..8b53d21b8a 100644
--- a/NEWS.rst
+++ b/NEWS.rst
@@ -33,6 +33,13 @@ v6.6.0 (unreleased)
* **Bug fixes**
+ * virdevmapper: Don't use libdevmapper to obtain dependencies
+
+ When building domain's private ``/dev`` in a namespace, libdevmapper was
+ consulted for getting full dependency tree of domain's disks. However, this
+ meant that libdevmapper opened ``/dev/mapper/control`` which wasn't closed
+ and was leaked to QEMU. CVE-2020-14339
I see that these were pushed now, but I can't find them in the list. I
presume you went through libvirt-security for review. Please post them
to libvir-list anyways for future reference.
Indeed. The bug was made private (mistakenly) for a brief moment thus I
figured to send the patches on the -security list. Then the mistake was
fixed and now I look like I don't know what I'm doing (which is not
necessarily untrue :-D).
Michal
