CVE-2026-88265

A flaw was found in crun. After pivot_root, reopening /dev/null for stdio can follow a symlink and attach a host file to container stdio, then change that file's ownership. 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.

CVSS v3 5.6 MEDIUM

5.6^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.1 / Impact : 4.0

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://access.redhat.com/errata/RHSA-2026:71668
https://access.redhat.com/security/cve/CVE-2026-88265
https://bugzilla.redhat.com/show_bug.cgi?id=2531224
https://github.com/containers/crun/

Configurations

No configuration.

History

02 Oct 2026, 14:17

Type	Values Removed	Values Added
References		() https://access.redhat.com/errata/RHSA-2026:71668 -

Information

Published : 2026-09-10 09:17

Updated : 2026-10-02 14:17

NVD link : CVE-2026-88265

Mitre link : CVE-2026-88265

CVE.ORG link : CVE-2026-88265

JSON object : View

Products Affected

No product.

CWE

CWE-59

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

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