RHSA-2026:61228MediumCVSS 4.8

Red Hat Security Advisory: pam security update

Published
August 31, 2026
Last Modified
August 31, 2026

🔗 CVE IDs covered (1)

CVE-2026-54411 →

📋 Description

CVE-2026-54411 — linux-pam: Plaintext password recovery via timing discrepancy in pam_userdb module

🎯 Affected products37

  • Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • pam-0:1.5.1-24.el9_4.2.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • pam-0:1.5.1-24.el9_4.2.i686 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • pam-0:1.5.1-24.el9_4.2.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • pam-0:1.5.1-24.el9_4.2.s390x as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • pam-0:1.5.1-24.el9_4.2.src as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • pam-0:1.5.1-24.el9_4.2.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • pam-debuginfo-0:1.5.1-24.el9_4.2.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • pam-debuginfo-0:1.5.1-24.el9_4.2.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • pam-debuginfo-0:1.5.1-24.el9_4.2.i686 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • pam-debuginfo-0:1.5.1-24.el9_4.2.i686 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • pam-debuginfo-0:1.5.1-24.el9_4.2.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • pam-debuginfo-0:1.5.1-24.el9_4.2.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • pam-debuginfo-0:1.5.1-24.el9_4.2.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • pam-debuginfo-0:1.5.1-24.el9_4.2.s390x as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • pam-debuginfo-0:1.5.1-24.el9_4.2.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • pam-debuginfo-0:1.5.1-24.el9_4.2.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • pam-debugsource-0:1.5.1-24.el9_4.2.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • pam-debugsource-0:1.5.1-24.el9_4.2.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • pam-debugsource-0:1.5.1-24.el9_4.2.i686 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • pam-debugsource-0:1.5.1-24.el9_4.2.i686 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • pam-debugsource-0:1.5.1-24.el9_4.2.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • pam-debugsource-0:1.5.1-24.el9_4.2.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • pam-debugsource-0:1.5.1-24.el9_4.2.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • pam-debugsource-0:1.5.1-24.el9_4.2.s390x as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • pam-debugsource-0:1.5.1-24.el9_4.2.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • pam-debugsource-0:1.5.1-24.el9_4.2.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.4)
  • pam-devel-0:1.5.1-24.el9_4.2.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • pam-devel-0:1.5.1-24.el9_4.2.i686 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • +7 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: To mitigate this issue, administrators should ensure that the `pam_userdb` module is not configured to store or compare credentials in plaintext. Verify that `pam_userdb` is either configured with a strong cryptographic hashing method or, if not required, is disabled. Avoid using `crypt=none` or omitting the `crypt=` argument when configuring `pam_userdb`. If changes are made to PAM configuration files, services relying on PAM may need to be restarted for the changes to take effect.

🔗 References (4)