Re: [PATCH for 6.6.0] news: Document recent CVE fix
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(a)redhat.com>
> ---
> 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