CVE-2026-88264
Crun: crun: /dev/console symlink follow allows root-owned file creation outside the rootfs
- State
- Published
- Severity
- 5.6 Medium
- Published
- Sep 10, 2026
- Updated
- Sep 25, 2026
- Reserved
- Sep 10, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.6 Medium | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N | redhat |
Weaknesses
- CWE-59 Improper Link Resolution Before File Access ('Link Following')
Affected Products
| Product | Versions |
|---|---|
cruncontainers |
|
Red Hat Hardened ImagesRed Hat |
|
Red Hat Enterprise Linux 10Red Hat | |
Red Hat Enterprise Linux 8Red Hat | |
Red Hat Enterprise Linux 9Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat |
References
- RHSA-2026:71668vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-88264vdb-entry
- RHBZ#2531223issue-tracking
- https://github.com/containers/crun/
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