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Gentoo Linux Security Advisory                           GLSA 202107-26
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                                           https://security.gentoo.org/
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 Severity: Low
    Title: runC: Container breakout
     Date: July 10, 2021
     Bugs: #790257
       ID: 202107-26

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Synopsis
========

A vulnerability has been found in runC which could result in privilege
escalation.

Background
==========

runC is a CLI tool for spawning and running containers according to the
OCI specification.

Affected packages
=================

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  app-emulation/runc         < 1.0.0_rc95            >= 1.0.0_rc95 

Description
===========

A vulnerability in runC could allow an attacker to achieve privilege
escalation if specific mount configuration prerequisites are satisfied.

Impact
======

An attacker may be able to escalation privileges to gain access to the
host system.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All runC users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=app-emulation/runc-1.0.0_rc95"

References
==========

[ 1 ] CVE-2021-30465
      https://nvd.nist.gov/vuln/detail/CVE-2021-30465

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 https://security.gentoo.org/glsa/202107-26

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2021 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5