Issued:
2026-01-12
Updated:
2026-01-12

RHSA-2026:0425 - Important: runc security update

Synopsis

Important: runc security update

Type/Severity

Security Advisory Important

Topic

An update for runc is now available for Red Hat Enterprise Linux 9.4 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

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

Security Fix(es):

  • runc: container escape via 'masked path' abuse due to mount race conditions (CVE-2025-31133)

  • runc: container escape with malicious config due to /dev/console mount and related races (CVE-2025-52565)

  • runc: container escape and denial of service due to arbitrary write gadgets and procfs write redirects (CVE-2025-52881)

  • github.com/sirupsen/logrus: github.com/sirupsen/logrus: Denial-of-Service due to large single-line payload (CVE-2025-65637)

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.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions9.4x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support9.4x86_64
Red Hat Enterprise Linux for Power, little endian - Extended Update Support9.4ppc64le
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support9.4s390x
Red Hat Enterprise Linux for IBM z Systems - 4 years of updates9.4s390x
Red Hat Enterprise Linux for ARM 64 - Extended Update Support9.4aarch64
Red Hat Enterprise Linux for ARM 64 - 4 years of updates9.4aarch64
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions9.4ppc64le
Red Hat Enterprise Linux Server - AUS9.4x86_64

Updated Packages

  • runc-1.2.9-1.el9_4.x86_64.rpm
  • runc-debugsource-1.2.9-1.el9_4.s390x.rpm
  • runc-1.2.9-1.el9_4.src.rpm
  • runc-1.2.9-1.el9_4.aarch64.rpm
  • runc-debuginfo-1.2.9-1.el9_4.x86_64.rpm
  • runc-debugsource-1.2.9-1.el9_4.x86_64.rpm
  • runc-debuginfo-1.2.9-1.el9_4.ppc64le.rpm
  • runc-1.2.9-1.el9_4.s390x.rpm
  • runc-debugsource-1.2.9-1.el9_4.aarch64.rpm
  • runc-1.2.9-1.el9_4.ppc64le.rpm
  • runc-debuginfo-1.2.9-1.el9_4.aarch64.rpm
  • runc-debuginfo-1.2.9-1.el9_4.s390x.rpm
  • runc-debugsource-1.2.9-1.el9_4.ppc64le.rpm

Fixes

CVEs

References

Additional information