UnratedRed Hat & Ubuntu Linux

zuluCrypt vulnerability

USN-8218-1 Published Apr 30, 2026

CVE-2025-53391

Affected products & platforms

Red Hat & Ubuntu LinuxUnclassified

Summary

Aaron Rainbolt discovered that zuluCrypt used insecure PolicyKit settings in zuluPolkit. An attacker could possibly use this issue to cause local privilege escalation to root. (CVE-2025-53391) Affected Ubuntu releases: 24.04, 22.04, 20.04, 18.04. CVEs: CVE-2025-53391.

Affected versions

Ubuntu 24.04
Ubuntu 22.04
Ubuntu 20.04
Ubuntu 18.04

Official advisory · medium-confidence parse· fetched 3 hours ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Apply available updates: `sudo apt update && sudo apt upgrade` (a standard system update installs the fix).

Official advisory · medium-confidence parse· fetched 3 hours ago·verify at source

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