RHSA-2026:22313MediumCVSS 7.5

Red Hat Security Advisory: compat-openssl11 security update

Published
June 1, 2026
Last Modified
July 30, 2026

🔗 CVE IDs covered (1)

CVE-2026-28390 →

📋 Description

CVE-2026-28390 — openssl: OpenSSL: Denial of Service due to NULL pointer dereference in CMS EnvelopedData processing

🎯 Affected products17

  • Red Hat Enterprise Linux AppStream (v. 9)
  • compat-openssl11-1:1.1.1k-5.el9_8.3.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • compat-openssl11-1:1.1.1k-5.el9_8.3.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • compat-openssl11-1:1.1.1k-5.el9_8.3.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • compat-openssl11-1:1.1.1k-5.el9_8.3.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • compat-openssl11-1:1.1.1k-5.el9_8.3.src as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • compat-openssl11-1:1.1.1k-5.el9_8.3.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • compat-openssl11-debuginfo-1:1.1.1k-5.el9_8.3.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • compat-openssl11-debuginfo-1:1.1.1k-5.el9_8.3.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • compat-openssl11-debuginfo-1:1.1.1k-5.el9_8.3.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • compat-openssl11-debuginfo-1:1.1.1k-5.el9_8.3.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • compat-openssl11-debuginfo-1:1.1.1k-5.el9_8.3.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • compat-openssl11-debugsource-1:1.1.1k-5.el9_8.3.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • compat-openssl11-debugsource-1:1.1.1k-5.el9_8.3.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • compat-openssl11-debugsource-1:1.1.1k-5.el9_8.3.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • compat-openssl11-debugsource-1:1.1.1k-5.el9_8.3.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • compat-openssl11-debugsource-1:1.1.1k-5.el9_8.3.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)

✅ 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.

🔗 References (4)