Improper Privilege Management Affecting crun package, versions *


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.1% (1st percentile)

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  • Snyk IDSNYK-RHEL10-CRUN-19843253
  • published16 Sept 2026
  • disclosed10 Sept 2026

Introduced: 10 Sep 2026

CVE-2026-84042  (opens in a new tab)
CWE-269  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:10 crun.

NVD Description

Note: Versions mentioned in the description apply only to the upstream crun package and not the crun package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

A flaw was found in crun. When crun is built with libkrun and a container is started rootful with passt networking (krun.use_passt), crun can execute attacker-controlled payload from the container image with host root privileges. The issue is a regression in crun 1.29. It affects crun >= 1.29

CVSS Base Scores

version 3.1