Issued:
2026-01-27
Updated:
2026-01-27

RHSA-2026:1378 - Moderate: osbuild-composer security update

Synopsis

Moderate: osbuild-composer security update

Type/Severity

Security Advisory Moderate

Topic

An update for osbuild-composer is now available for Red Hat Enterprise Linux 10.0 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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

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):

  • golang: archive/tar: Unbounded allocation when parsing GNU sparse map (CVE-2025-58183)

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 - Extended Update Support10.0x86_64
Red Hat Enterprise Linux for x86_64 - 4 years of updates10.0x86_64
Red Hat Enterprise Linux for Power, little endian - Extended Update Support10.0ppc64le
Red Hat Enterprise Linux for Power, little endian - 4 years of support10.0ppc64le
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support10.0s390x
Red Hat Enterprise Linux for IBM z Systems - 4 years of updates10.0s390x
Red Hat Enterprise Linux for ARM 64 - Extended Update Support10.0aarch64
Red Hat Enterprise Linux for ARM 64 - 4 years of updates10.0aarch64

Updated Packages

  • osbuild-composer-core-134.1-4.el10_0.ppc64le.rpm
  • osbuild-composer-tests-debuginfo-134.1-4.el10_0.aarch64.rpm
  • osbuild-composer-worker-debuginfo-134.1-4.el10_0.x86_64.rpm
  • osbuild-composer-core-134.1-4.el10_0.aarch64.rpm
  • osbuild-composer-tests-debuginfo-134.1-4.el10_0.ppc64le.rpm
  • osbuild-composer-worker-debuginfo-134.1-4.el10_0.ppc64le.rpm
  • osbuild-composer-core-134.1-4.el10_0.x86_64.rpm
  • osbuild-composer-worker-134.1-4.el10_0.s390x.rpm
  • osbuild-composer-core-134.1-4.el10_0.s390x.rpm
  • osbuild-composer-134.1-4.el10_0.x86_64.rpm
  • osbuild-composer-worker-134.1-4.el10_0.x86_64.rpm
  • osbuild-composer-worker-debuginfo-134.1-4.el10_0.aarch64.rpm
  • osbuild-composer-worker-134.1-4.el10_0.ppc64le.rpm
  • osbuild-composer-core-debuginfo-134.1-4.el10_0.s390x.rpm
  • osbuild-composer-core-debuginfo-134.1-4.el10_0.x86_64.rpm
  • osbuild-composer-debugsource-134.1-4.el10_0.x86_64.rpm
  • osbuild-composer-134.1-4.el10_0.aarch64.rpm
  • osbuild-composer-tests-debuginfo-134.1-4.el10_0.s390x.rpm
  • osbuild-composer-tests-debuginfo-134.1-4.el10_0.x86_64.rpm
  • osbuild-composer-134.1-4.el10_0.ppc64le.rpm
  • osbuild-composer-core-debuginfo-134.1-4.el10_0.ppc64le.rpm
  • osbuild-composer-debugsource-134.1-4.el10_0.s390x.rpm
  • osbuild-composer-worker-134.1-4.el10_0.aarch64.rpm
  • osbuild-composer-134.1-4.el10_0.src.rpm
  • osbuild-composer-worker-debuginfo-134.1-4.el10_0.s390x.rpm
  • osbuild-composer-core-debuginfo-134.1-4.el10_0.aarch64.rpm
  • osbuild-composer-debugsource-134.1-4.el10_0.aarch64.rpm
  • osbuild-composer-debugsource-134.1-4.el10_0.ppc64le.rpm
  • osbuild-composer-134.1-4.el10_0.s390x.rpm

Fixes

CVEs

References

Additional information