RHSA-2026:48036HighCVSS 7.8

Red Hat Security Advisory: osbuild-composer security update

Published
July 29, 2026
Last Modified
August 25, 2026

🔗 CVE IDs covered (6)

CVE-2026-32280 →CVE-2026-32281 →CVE-2026-32282 →CVE-2026-32283 →CVE-2025-68121 →CVE-2026-25679 →

📋 Description

CVE-2025-68121 — crypto/tls: crypto/tls: Incorrect certificate validation during TLS session resumption CVE-2026-25679 — net/url: Incorrect parsing of IPv6 host literals in net/url CVE-2026-32280 — crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building CVE-2026-32281 — crypto/x509: golang: Go crypto/x509: Denial of Service via inefficient certificate chain validation CVE-2026-32282 — golang: internal/syscall/unix: Root.Chmod can follow symlinks out of the root CVE-2026-32283 — crypto/tls: golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages

🎯 Affected products38

  • Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • osbuild-composer-0:76.1-6.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • osbuild-composer-0:76.1-6.el9_2.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • osbuild-composer-0:76.1-6.el9_2.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • osbuild-composer-0:76.1-6.el9_2.src as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • osbuild-composer-0:76.1-6.el9_2.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • osbuild-composer-core-0:76.1-6.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • osbuild-composer-core-0:76.1-6.el9_2.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • osbuild-composer-core-0:76.1-6.el9_2.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • osbuild-composer-core-0:76.1-6.el9_2.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • osbuild-composer-core-debuginfo-0:76.1-6.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • osbuild-composer-core-debuginfo-0:76.1-6.el9_2.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • osbuild-composer-core-debuginfo-0:76.1-6.el9_2.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • osbuild-composer-core-debuginfo-0:76.1-6.el9_2.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • osbuild-composer-debuginfo-0:76.1-6.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • osbuild-composer-debuginfo-0:76.1-6.el9_2.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • osbuild-composer-debuginfo-0:76.1-6.el9_2.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • osbuild-composer-debuginfo-0:76.1-6.el9_2.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • osbuild-composer-debugsource-0:76.1-6.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • osbuild-composer-debugsource-0:76.1-6.el9_2.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • osbuild-composer-debugsource-0:76.1-6.el9_2.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • osbuild-composer-debugsource-0:76.1-6.el9_2.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • osbuild-composer-dnf-json-0:76.1-6.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • osbuild-composer-dnf-json-0:76.1-6.el9_2.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • osbuild-composer-dnf-json-0:76.1-6.el9_2.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • osbuild-composer-dnf-json-0:76.1-6.el9_2.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • osbuild-composer-tests-debuginfo-0:76.1-6.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • osbuild-composer-tests-debuginfo-0:76.1-6.el9_2.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • osbuild-composer-tests-debuginfo-0:76.1-6.el9_2.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • osbuild-composer-tests-debuginfo-0:76.1-6.el9_2.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • +8 more not shown

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

🔗 References (9)