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OpenAdvisories
High ALSA-2024:0670 1 CVE

Important: runc security update

Published Feb 2, 2024 · Updated Oct 29, 2026

Summary

The runC tool is a lightweight, portable implementation of the Open Container Format (OCF) that provides container runtime.

Security Fix(es):

* runc: file descriptor leak (CVE-2024-21626)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Fixed packages 1

ReleasePackageFixed in
AlmaLinux · 9 runc 4:1.1.12-1.el9_3

Vulnerabilities 1

  • High 8.6
    CVE-2024-21626 Public exploit EPSS 19%

    runc container breakout through process.cwd trickery and leaked fds

    runc is a CLI tool for spawning and running containers on Linux according to the OCI specification. In runc 1.1.11 and earlier, due to an internal file descriptor leak, an attacker could cause a newly-spawned container process (from runc exec) to have a worki…

References

  • report
    https://access.redhat.com/security/cve/CVE-2024-21626
  • report
    https://bugzilla.redhat.com/2258725
  • advisory
    https://errata.almalinux.org/9/ALSA-2024-0670.html