Time-of-check Time-of-use (TOCTOU) Affecting podman-docker package, versions <0:3.0.1-6.el8


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
6.6% (93rd percentile)

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  • Snyk IDSNYK-RHEL8-PODMANDOCKER-18680725
  • published12 Aug 2026
  • disclosed19 May 2021

Introduced: 19 May 2021

CVE-2021-30465  (opens in a new tab)
CWE-367  (opens in a new tab)

How to fix?

Upgrade RHEL:8 podman-docker to version 0:3.0.1-6.el8 or higher.
This issue was patched in RHSA-2021:2437.

NVD Description

Note: Versions mentioned in the description apply only to the upstream podman-docker package and not the podman-docker package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

runc before 1.0.0-rc95 allows a Container Filesystem Breakout via Directory Traversal. To exploit the vulnerability, an attacker must be able to create multiple containers with a fairly specific mount configuration. The problem occurs via a symlink-exchange attack that relies on a race condition.

CVSS Base Scores

version 3.1