Description
A flaw was found in crun. When the container configuration does not give /dev a dedicated mount, terminal setup can redirect /dev/console onto an attacker-controlled path, including via the read-only-rootfs bind-mount fallback. Affected versions are crun 1.29.1 and earlier. Default configurations that mount a fresh /dev are not exposed. No fixed release is available yet.
Published: 2026-09-10
Score: 5.6 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Workaround

Always mount /dev (Podman/crun default). Do not run untrusted images with a /dev-less config.

Tracking

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Advisories

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History

Thu, 10 Sep 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 10 Sep 2026 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Thu, 10 Sep 2026 08:45:00 +0000

Type Values Removed Values Added
Description A flaw was found in crun. When the container configuration does not give /dev a dedicated mount, terminal setup can redirect /dev/console onto an attacker-controlled path, including via the read-only-rootfs bind-mount fallback. Affected versions are crun 1.29.1 and earlier. Default configurations that mount a fresh /dev are not exposed. No fixed release is available yet.
Title Crun: crun: /dev/console symlink follow allows root-owned file creation outside the rootfs
First Time appeared Redhat
Redhat hummingbird
Weaknesses CWE-59
CPEs cpe:/a:redhat:hummingbird:1
Vendors & Products Redhat
Redhat hummingbird
References
Metrics cvssV3_1

{'score': 5.6, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N'}


Subscriptions

Redhat Hummingbird
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-09-10T12:55:30.918Z

Reserved: 2026-09-10T01:57:15.157Z

Link: CVE-2026-88264

cve-icon Vulnrichment

Updated: 2026-09-10T12:55:17.351Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-10T09:17:03.397

Modified: 2026-09-10T14:50:07.813

Link: CVE-2026-88264

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-09-10T00:00:00Z

Links: CVE-2026-88264 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-09-10T09:30:10Z

Weaknesses
  • CWE-59

    Improper Link Resolution Before File Access ('Link Following')