CVE-2026-109968 Red Hat CVE debrief

Who should care

Local system administrators and security teams responsible for managing clevis installations on Red Hat Enterprise Linux systems should assess exposure and prioritize remediation. These teams should review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance. They should also plan vendor-supported updates or mitigations through normal change control where exposure is confirmed and review compensating A

Why it matters

A flaw in the clevis PKCS#11 pin logs LUKS disk encryption passphrases in plaintext to a world-readable log file, allowing local attackers to obtain sensitive information.

• Local attackers can obtain LUKS passphrases from world-readable log files.
• Affected systems require verification of clevis installation and configuration.
• Remediation priority for local system administrators and security teams.

Technical summary

The clevis-pkcs11-afunix-socket-unlock daemon logs LUKS disk encryption passphrases in plaintext to a world-readable log file due to a flaw in the clevis PKCS#11 pin. This vulnerability affects clevis installations on Red Hat Enterprise Linux systems, allowing local attackers to obtain sensitive information. The technical impact of this vulnerability is that local attackers can read LUKS passphrases from world-readable log files. The vulnerability is caused by the insecure logging of sensitive data in plaintext. The affected product is clevis, and the vulnerability is related to the PKCS#11 pin and LUKS disk encryption passphrases.

Defensive priority

Medium priority for local system administrators and security teams to verify and remediate affected systems.

Recommended defensive actions

• Verify clevis installation and configuration on local systems.
• Restrict access to log files containing LUKS passphrases.
• Consider updating clevis to a version that addresses this issue, if available.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The CVE record and source item provide details on the vulnerability, but specific versions of clevis and affected systems require verification from official sources. The flaw in the clevis PKCS#11 pin logs LUKS disk encryption passphrases in plaintext to a world-readable log file. Evidence of this vulnerability can be found in the CVE record and source item. However, defenders should verify the affected scope and severity through official advisories and consider the limitations of the provided information.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.