CVE-2026-88264

Summary

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 Software

Weaknesses

• CWE-59: Improper Link Resolution Before File Access ('Link Following')

Workarounds

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

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

References

• https://access.redhat.com/security/cve/CVE-2026-88264
• https://bugzilla.redhat.com/show_bug.cgi?id=2531223
• https://github.com/containers/crun/

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