RHSA-2026:39012HighCVSS 8.1

Red Hat Security Advisory: compat-openssl11 security update

Published
July 13, 2026
Last Modified
August 8, 2026

🔗 CVE IDs covered (2)

CVE-2026-28390 →CVE-2026-45447 →

📋 Description

CVE-2026-28390 — openssl: OpenSSL: Denial of Service due to NULL pointer dereference in CMS EnvelopedData processing CVE-2026-45447 — openssl: Heap Use-After-Free in OpenSSL PKCS7_verify()

🎯 Affected products17

  • Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • compat-openssl11-1:1.1.1k-4.el9_2.2.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • compat-openssl11-1:1.1.1k-4.el9_2.2.i686 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • compat-openssl11-1:1.1.1k-4.el9_2.2.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • compat-openssl11-1:1.1.1k-4.el9_2.2.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • compat-openssl11-1:1.1.1k-4.el9_2.2.src as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • compat-openssl11-1:1.1.1k-4.el9_2.2.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • compat-openssl11-debuginfo-1:1.1.1k-4.el9_2.2.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • compat-openssl11-debuginfo-1:1.1.1k-4.el9_2.2.i686 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • compat-openssl11-debuginfo-1:1.1.1k-4.el9_2.2.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • compat-openssl11-debuginfo-1:1.1.1k-4.el9_2.2.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • compat-openssl11-debuginfo-1:1.1.1k-4.el9_2.2.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • compat-openssl11-debugsource-1:1.1.1k-4.el9_2.2.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • compat-openssl11-debugsource-1:1.1.1k-4.el9_2.2.i686 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • compat-openssl11-debugsource-1:1.1.1k-4.el9_2.2.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • compat-openssl11-debugsource-1:1.1.1k-4.el9_2.2.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • compat-openssl11-debugsource-1:1.1.1k-4.el9_2.2.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)

✅ 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: Applications that process Cryptographic Message Syntax (CMS) EnvelopedData messages should be configured to only accept input from trusted sources. Restricting network access to services that process untrusted CMS data can also reduce exposure to this Denial of Service vulnerability. 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)