A lxc security update has been released for Debian GNU/Linux 10 LTS to address an issue where unprivileged users are able to infer whether any file exists, even in protected directory trees.

[SECURITY] [DLA 3533-1] lxc security update

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Debian LTS Advisory DLA-3533-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Santiago Ruano Rincón
August 17, 2023 https://wiki.debian.org/LTS
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Package : lxc
Version : 1:3.1.0+really3.0.3-8+deb10u1
CVE ID : CVE-2022-47952

LXC is a Linux Containers userspace tool set. Maher Azzouzi reported that the
lxc-user-nic command, included in LXC, allowed unprivileged users to infer
whether any file exists, even in protected directory trees.

For Debian 10 buster, this problem has been fixed in version
1:3.1.0+really3.0.3-8+deb10u1.

We recommend that you upgrade your lxc packages.

For the detailed security status of lxc please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/lxc

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS