RLSA-2026:3753

Synopsis

Important: osbuild-composer security update

Description

A service for building customized OS artifacts, such as VM images and OSTree commits, that uses osbuild under the hood. Besides building images for local usage, it can also upload images directly to cloud. It is compatible with composer-cli and cockpit-composer clients.

Security Fix(es):

* crypto/x509: golang: Denial of Service due to excessive resource consumption via crafted certificate (CVE-2025-61729)

* golang: archive/zip: Excessive CPU consumption when building archive index in archive/zip (CVE-2025-61728)

* golang: net/url: Memory exhaustion in query parameter parsing in net/url (CVE-2025-61726)

* crypto/tls: Unexpected session resumption in crypto/tls (CVE-2025-68121)

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

2418462 2434431 2434432 2437111

CVEs

CVE-2025-61726 CVE-2025-61728 CVE-2025-61729 CVE-2025-68121

Affected packages

Rocky Linux 9 aarch64 - AppStream

osbuild-composer-0:149-4.el9_7.rocky.0.8.aarch64.rpm osbuild-composer-0:149-4.el9_7.rocky.0.8.src.rpm osbuild-composer-core-0:149-4.el9_7.rocky.0.8.aarch64.rpm osbuild-composer-core-debuginfo-0:149-4.el9_7.rocky.0.8.aarch64.rpm osbuild-composer-debuginfo-0:149-4.el9_7.rocky.0.8.aarch64.rpm osbuild-composer-debugsource-0:149-4.el9_7.rocky.0.8.aarch64.rpm osbuild-composer-worker-0:149-4.el9_7.rocky.0.8.aarch64.rpm osbuild-composer-worker-debuginfo-0:149-4.el9_7.rocky.0.8.aarch64.rpm

Rocky Linux 9 ppc64le - AppStream

osbuild-composer-0:149-4.el9_7.rocky.0.8.ppc64le.rpm osbuild-composer-0:149-4.el9_7.rocky.0.8.src.rpm osbuild-composer-core-0:149-4.el9_7.rocky.0.8.ppc64le.rpm osbuild-composer-core-debuginfo-0:149-4.el9_7.rocky.0.8.ppc64le.rpm osbuild-composer-debuginfo-0:149-4.el9_7.rocky.0.8.ppc64le.rpm osbuild-composer-debugsource-0:149-4.el9_7.rocky.0.8.ppc64le.rpm osbuild-composer-worker-0:149-4.el9_7.rocky.0.8.ppc64le.rpm osbuild-composer-worker-debuginfo-0:149-4.el9_7.rocky.0.8.ppc64le.rpm

Rocky Linux 9 s390x - AppStream

osbuild-composer-0:149-4.el9_7.rocky.0.8.s390x.rpm osbuild-composer-0:149-4.el9_7.rocky.0.8.src.rpm osbuild-composer-core-0:149-4.el9_7.rocky.0.8.s390x.rpm osbuild-composer-core-debuginfo-0:149-4.el9_7.rocky.0.8.s390x.rpm osbuild-composer-debuginfo-0:149-4.el9_7.rocky.0.8.s390x.rpm osbuild-composer-debugsource-0:149-4.el9_7.rocky.0.8.s390x.rpm osbuild-composer-worker-0:149-4.el9_7.rocky.0.8.s390x.rpm osbuild-composer-worker-debuginfo-0:149-4.el9_7.rocky.0.8.s390x.rpm

Rocky Linux 9 x86_64 - AppStream

osbuild-composer-0:149-4.el9_7.rocky.0.8.src.rpm osbuild-composer-0:149-4.el9_7.rocky.0.8.x86_64.rpm osbuild-composer-core-0:149-4.el9_7.rocky.0.8.x86_64.rpm osbuild-composer-core-debuginfo-0:149-4.el9_7.rocky.0.8.x86_64.rpm osbuild-composer-debuginfo-0:149-4.el9_7.rocky.0.8.x86_64.rpm osbuild-composer-debugsource-0:149-4.el9_7.rocky.0.8.x86_64.rpm osbuild-composer-worker-0:149-4.el9_7.rocky.0.8.x86_64.rpm osbuild-composer-worker-debuginfo-0:149-4.el9_7.rocky.0.8.x86_64.rpm