RHSA-2026:78951MediumCVSS 7.8

Red Hat Security Advisory: kbd security update

Published
October 8, 2026
Last Modified
November 5, 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. 8)
  • kbd-0:2.0.4-11.el8_10.1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kbd-0:2.0.4-11.el8_10.1.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kbd-0:2.0.4-11.el8_10.1.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kbd-0:2.0.4-11.el8_10.1.src as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kbd-0:2.0.4-11.el8_10.1.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kbd-debuginfo-0:2.0.4-11.el8_10.1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kbd-debuginfo-0:2.0.4-11.el8_10.1.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kbd-debuginfo-0:2.0.4-11.el8_10.1.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kbd-debuginfo-0:2.0.4-11.el8_10.1.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kbd-debugsource-0:2.0.4-11.el8_10.1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kbd-debugsource-0:2.0.4-11.el8_10.1.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kbd-debugsource-0:2.0.4-11.el8_10.1.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kbd-debugsource-0:2.0.4-11.el8_10.1.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kbd-legacy-0:2.0.4-11.el8_10.1.noarch as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • kbd-misc-0:2.0.4-11.el8_10.1.noarch as a component of Red Hat Enterprise Linux BaseOS (v. 8)

✅ 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)