RHSA-2026:95618MediumCVSS 7.0

Red Hat Security Advisory: glibc security update

Published
November 5, 2026
Last Modified
November 11, 2026

🔗 CVE IDs covered (4)

CVE-2026-8674 →CVE-2026-86805 →CVE-2026-89092 →CVE-2026-95818 →

📋 Description

CVE-2026-8674 — glibc: glibc DNS stub resolver: Denial of Service via long search domain in configuration CVE-2026-86805 — glibc: glibc: Privilege escalation and arbitrary code execution via TOCTOU race condition in dynamic loader CVE-2026-89092 — glibc: nscd stack overflow leads to degraded DNS resolution CVE-2026-95818 — glibc: glibc: Local attacker can cause denial of service and information disclosure via stack-based buffer overflow.

🎯 Affected products200

  • Red Hat Enterprise Linux AppStream (v. 9)
  • Red Hat Enterprise Linux BaseOS (v. 9)
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • glibc-0:2.34-284.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • glibc-0:2.34-284.el9_8.4.i686 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • glibc-0:2.34-284.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • glibc-0:2.34-284.el9_8.4.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • glibc-0:2.34-284.el9_8.4.src as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • glibc-0:2.34-284.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • glibc-all-langpacks-0:2.34-284.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • glibc-all-langpacks-0:2.34-284.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • glibc-all-langpacks-0:2.34-284.el9_8.4.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • glibc-all-langpacks-0:2.34-284.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • glibc-benchtests-0:2.34-284.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • glibc-benchtests-0:2.34-284.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • glibc-benchtests-0:2.34-284.el9_8.4.s390x as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • glibc-benchtests-0:2.34-284.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • glibc-benchtests-debuginfo-0:2.34-284.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • glibc-benchtests-debuginfo-0:2.34-284.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • glibc-benchtests-debuginfo-0:2.34-284.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • glibc-benchtests-debuginfo-0:2.34-284.el9_8.4.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • glibc-benchtests-debuginfo-0:2.34-284.el9_8.4.i686 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • glibc-benchtests-debuginfo-0:2.34-284.el9_8.4.i686 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • glibc-benchtests-debuginfo-0:2.34-284.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • glibc-benchtests-debuginfo-0:2.34-284.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • glibc-benchtests-debuginfo-0:2.34-284.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • glibc-benchtests-debuginfo-0:2.34-284.el9_8.4.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • glibc-benchtests-debuginfo-0:2.34-284.el9_8.4.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • glibc-benchtests-debuginfo-0:2.34-284.el9_8.4.s390x as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • glibc-benchtests-debuginfo-0:2.34-284.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • +170 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 (7)