RHSA-2026:57610MediumCVSS 7.8

Red Hat Security Advisory: kbd security update

Published
August 20, 2026
Last Modified
August 24, 2026

🔗 CVE IDs covered (1)

CVE-2026-72693 →

📋 Description

CVE-2026-72693 — kbd: Local privilege escalation in openvt via incorrect process owner verification allowing passwordless root login

🎯 Affected products16

  • Red Hat Enterprise Linux BaseOS (v. 9)
  • kbd-0:2.4.0-12.el9_8.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • kbd-0:2.4.0-12.el9_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • kbd-0:2.4.0-12.el9_8.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • kbd-0:2.4.0-12.el9_8.src as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • kbd-0:2.4.0-12.el9_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • kbd-debuginfo-0:2.4.0-12.el9_8.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • kbd-debuginfo-0:2.4.0-12.el9_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • kbd-debuginfo-0:2.4.0-12.el9_8.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • kbd-debuginfo-0:2.4.0-12.el9_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • kbd-debugsource-0:2.4.0-12.el9_8.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • kbd-debugsource-0:2.4.0-12.el9_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • kbd-debugsource-0:2.4.0-12.el9_8.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • kbd-debugsource-0:2.4.0-12.el9_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • kbd-legacy-0:2.4.0-12.el9_8.noarch as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • kbd-misc-0:2.4.0-12.el9_8.noarch as a component of Red Hat Enterprise Linux BaseOS (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: To mitigate this issue, avoid using `openvt -u` in privileged `kbrequest`/init deployments. Instead, configure the keyboard request to initiate a standard authenticated login on the new virtual terminal, or disable the keyboard request binding entirely until a fix is available. Changes to `kbrequest` configurations may require a system restart or service reload to take effect.

🔗 References (4)