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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| containers | crun | ≤ 1.29.1 | — |
| Red Hat | Red Hat Hardened Images | — | — |
| Red Hat | Red Hat Enterprise Linux 10 | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 5 | — | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | crun | No fix yet | — |
| Debian 13 | crun | No fix yet | — |
| Debian 12 | crun | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | crun | No fix yet | — |
| Ubuntu 26.04 LTS | crun | No fix yet | — |
| Ubuntu 24.04 LTS | crun | No fix yet | — |
| Ubuntu 22.04 LTS | crun | No fix yet | — |
| Ubuntu 20.04 LTS | crun | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | crun +2 | 1.30-1.hum1 | RHSA-2026:71668 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | crun | 1.30.1-1.1 | openSUSE-SU-2026:12162-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | crun | 1.30.1-r0 | — |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | crun | No fix yet | — |
Advisories 2
- openSUSE-SU-2026:12162-1 crun-1.30.1-1.1 on GA media SUSE / openSUSE Security Updates · Oct 18, 2026
- RHSA-2026:71668 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 3, 2026
References
- RHSA-2026:71668 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-88264 vdb-entry
- RHBZ#2531223 issue-tracking
- https://github.com/containers/crun/