RHSA-2026:89738HighCVSS 7.5

Red Hat Security Advisory: compat-openssl11 security update

Published
October 26, 2026
Last Modified
October 26, 2026

🔗 CVE IDs covered (2)

CVE-2026-63072 →CVE-2026-84782 →

📋 Description

CVE-2026-63072 — openssl: heap buffer overflow in CMS key unwrapping CVE-2026-84782 — openssl: compat-openssl: openssl: Information disclosure via DTLS handshake retransmission

🎯 Affected products17

  • Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • compat-openssl11-1:1.1.1k-5.el9_6.4.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • compat-openssl11-1:1.1.1k-5.el9_6.4.i686 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • compat-openssl11-1:1.1.1k-5.el9_6.4.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • compat-openssl11-1:1.1.1k-5.el9_6.4.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • compat-openssl11-1:1.1.1k-5.el9_6.4.src as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • compat-openssl11-1:1.1.1k-5.el9_6.4.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • compat-openssl11-debuginfo-1:1.1.1k-5.el9_6.4.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • compat-openssl11-debuginfo-1:1.1.1k-5.el9_6.4.i686 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • compat-openssl11-debuginfo-1:1.1.1k-5.el9_6.4.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • compat-openssl11-debuginfo-1:1.1.1k-5.el9_6.4.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • compat-openssl11-debuginfo-1:1.1.1k-5.el9_6.4.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • compat-openssl11-debugsource-1:1.1.1k-5.el9_6.4.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • compat-openssl11-debugsource-1:1.1.1k-5.el9_6.4.i686 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • compat-openssl11-debugsource-1:1.1.1k-5.el9_6.4.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • compat-openssl11-debugsource-1:1.1.1k-5.el9_6.4.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • compat-openssl11-debugsource-1:1.1.1k-5.el9_6.4.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)

✅ 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 (5)