During the month of February 2026 and on behalf of Freexian, I worked on the
following:

containerd
----------

Uploaded 1.4.13~ds1-1~deb11u6 and issued DLA-4467-1:
<https://lists.debian.org/debian-lts-announce/2026/02/msg00006.html>

  * CVE-2024-25621: Overly broad default permission vulnerability.
  * CVE-2025-64329: Bug in the CRI Attach implementation.

I also reached out to the Debian Release team in order to upload those fixes in
Debian oldstable (bookworm), I'm still waiting for feedback.

glib2.0
-------

A number of low severity issues where found in glib. Andreas Henriksson took
care of those for Debian stable, oldstable and LTS (bullseye). As part of my
onboarding, I reached out to Andreas and asked if I could handle the ELTS
uploads (buster, stretch), to which he agreed.

Backporting the patches was trivial, thus I uploaded the following versions,
and published the following ELA:
- <https://www.freexian.com/lts/extended/updates/ela-1652-1-glib2.0/>
- stretch: 2.50.3-2+deb9u9
- buster: 2.58.3-2+deb10u10

runc
----

I tried to move forward the discussion regarding the runc package.

There is an ongoing discussion about how to address the latest batch of CVEs
that were reported for runc, at <https://bugs.debian.org/1120140>. Backporting
the patches doesn't seem to be a realistic option. More generally, the
discussion is about how to provide support for this package in Debian stable
and older releases.

The maintainer of the runc package did a first assessment and proposed
different options for Debian. I tried one of the approaches: to build new
versions of runc against older Debian releases. My conclusion is that if we go
this way, we shouldn't try to use the Build-Depends from the Debian archive,
but we should use the vendor tree from src:runc instead. That could go in a
different source package, and this is the approach followed by Ubuntu.

ca-certificates
---------------

Backporting ca-certificates to older Debian releases (ELTS) proved challenging,
and also includes updates in other related packages: ca-certificates-java and
gcc-6 (for stretch).

I worked with Bastien Roucaries on this topic, tested a bunch of scenarios,
and uncovered new issues in the process. We're still working on that.

Thanks
------

Thanks to our sponsors for making this possible, and to Freexian for
handling the offering: <https://www.freexian.com/lts/debian/#sponsors>.

--
Arnaud

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