RHSA-2026:89749MediumCVSS 5.3

Red Hat Security Advisory: xz security update

Published
October 26, 2026
Last Modified
October 26, 2026

🔗 CVE IDs covered (1)

CVE-2026-34743 →

📋 Description

CVE-2026-34743 — xz: XZ Utils: Denial of Service via buffer overflow in index decoding

🎯 Affected products61

  • Red Hat Enterprise Linux AppStream (v. 9)
  • Red Hat Enterprise Linux BaseOS (v. 9)
  • xz-0:5.2.5-8.el9_8.1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • xz-0:5.2.5-8.el9_8.1.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • xz-0:5.2.5-8.el9_8.1.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • xz-0:5.2.5-8.el9_8.1.src as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • xz-0:5.2.5-8.el9_8.1.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • xz-debuginfo-0:5.2.5-8.el9_8.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • xz-debuginfo-0:5.2.5-8.el9_8.1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • xz-debuginfo-0:5.2.5-8.el9_8.1.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • xz-debuginfo-0:5.2.5-8.el9_8.1.i686 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • xz-debuginfo-0:5.2.5-8.el9_8.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • xz-debuginfo-0:5.2.5-8.el9_8.1.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • xz-debuginfo-0:5.2.5-8.el9_8.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • xz-debuginfo-0:5.2.5-8.el9_8.1.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • xz-debuginfo-0:5.2.5-8.el9_8.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • xz-debuginfo-0:5.2.5-8.el9_8.1.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • xz-debugsource-0:5.2.5-8.el9_8.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • xz-debugsource-0:5.2.5-8.el9_8.1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • xz-debugsource-0:5.2.5-8.el9_8.1.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • xz-debugsource-0:5.2.5-8.el9_8.1.i686 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • xz-debugsource-0:5.2.5-8.el9_8.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • xz-debugsource-0:5.2.5-8.el9_8.1.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • xz-debugsource-0:5.2.5-8.el9_8.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • xz-debugsource-0:5.2.5-8.el9_8.1.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • xz-debugsource-0:5.2.5-8.el9_8.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • xz-debugsource-0:5.2.5-8.el9_8.1.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • xz-devel-0:5.2.5-8.el9_8.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • xz-devel-0:5.2.5-8.el9_8.1.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • xz-devel-0:5.2.5-8.el9_8.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • +31 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

🔗 References (4)