RLSA-2026:29702

Synopsis

Important: runc security update

Description

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

Security Fix(es):

* net/url: Incorrect parsing of IPv6 host literals in net/url (CVE-2026-25679)

* crypto/x509: golang: Go crypto/x509: Denial of Service via inefficient certificate chain validation (CVE-2026-32281)

* crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building (CVE-2026-32280)

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.

Affected products

Rocky Linux 9 aarch64 Rocky Linux 9 ppc64le Rocky Linux 9 s390x Rocky Linux 9 x86_64

Fixes

2445356 2456333 2456339

CVEs

CVE-2026-25679 CVE-2026-32280 CVE-2026-32281

Affected packages

Rocky Linux 9 aarch64 - AppStream

runc-4:1.4.2-2.el9_8.aarch64.rpm runc-4:1.4.2-2.el9_8.src.rpm runc-debuginfo-4:1.4.2-2.el9_8.aarch64.rpm runc-debugsource-4:1.4.2-2.el9_8.aarch64.rpm

Rocky Linux 9 ppc64le - AppStream

runc-4:1.4.2-2.el9_8.ppc64le.rpm runc-4:1.4.2-2.el9_8.src.rpm runc-debuginfo-4:1.4.2-2.el9_8.ppc64le.rpm runc-debugsource-4:1.4.2-2.el9_8.ppc64le.rpm

Rocky Linux 9 s390x - AppStream

runc-4:1.4.2-2.el9_8.s390x.rpm runc-4:1.4.2-2.el9_8.src.rpm runc-debuginfo-4:1.4.2-2.el9_8.s390x.rpm runc-debugsource-4:1.4.2-2.el9_8.s390x.rpm

Rocky Linux 9 x86_64 - AppStream

runc-4:1.4.2-2.el9_8.src.rpm runc-4:1.4.2-2.el9_8.x86_64.rpm runc-debuginfo-4:1.4.2-2.el9_8.x86_64.rpm runc-debugsource-4:1.4.2-2.el9_8.x86_64.rpm