Ubuntu Security Notices
USN-8218-1

USN-8218-1: zuluCrypt vulnerability

Publication date

30 April 2026

Overview

zuluCrypt could be made to run programs as an administrator.

Releases

24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS

Packages

zulucrypt - A simple, feature rich and powerful solution for hard drives encryption

Details

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)

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release	Package Version
24.04 LTS noble	libzulucrypt-dev – 6.2.0-1ubuntu3+esm1
	libzulucrypt-exe-dev – 6.2.0-1ubuntu3+esm1
	libzulucrypt-exe1.2.0 – 6.2.0-1ubuntu3+esm1
	libzulucrypt-plugins – 6.2.0-1ubuntu3+esm1
	libzulucrypt1.2.0 – 6.2.0-1ubuntu3+esm1
	libzulucryptpluginmanager-dev – 6.2.0-1ubuntu3+esm1
	libzulucryptpluginmanager1.0.0 – 6.2.0-1ubuntu3+esm1
	zulucrypt-cli – 6.2.0-1ubuntu3+esm1
	zulucrypt-gui – 6.2.0-1ubuntu3+esm1
	zulumount-cli – 6.2.0-1ubuntu3+esm1
	zulumount-gui – 6.2.0-1ubuntu3+esm1
	zulupolkit – 6.2.0-1ubuntu3+esm1
	zulusafe-cli – 6.2.0-1ubuntu3+esm1
22.04 LTS jammy	libzulucrypt-dev – 5.7.1-2ubuntu0.1~esm1
	libzulucrypt-exe-dev – 5.7.1-2ubuntu0.1~esm1
	libzulucrypt-exe1.2.0 – 5.7.1-2ubuntu0.1~esm1
	libzulucrypt-plugins – 5.7.1-2ubuntu0.1~esm1
	libzulucrypt1.2.0 – 5.7.1-2ubuntu0.1~esm1
	libzulucryptpluginmanager-dev – 5.7.1-2ubuntu0.1~esm1
	libzulucryptpluginmanager1.0.0 – 5.7.1-2ubuntu0.1~esm1
	zulucrypt-cli – 5.7.1-2ubuntu0.1~esm1
	zulucrypt-gui – 5.7.1-2ubuntu0.1~esm1
	zulumount-cli – 5.7.1-2ubuntu0.1~esm1
	zulumount-gui – 5.7.1-2ubuntu0.1~esm1
	zulupolkit – 5.7.1-2ubuntu0.1~esm1
	zulusafe-cli – 5.7.1-2ubuntu0.1~esm1
20.04 LTS focal	libzulucrypt-dev – 5.7.0-1ubuntu0.1~esm1
	libzulucrypt-exe-dev – 5.7.0-1ubuntu0.1~esm1
	libzulucrypt-exe1.2.0 – 5.7.0-1ubuntu0.1~esm1
	libzulucrypt-plugins – 5.7.0-1ubuntu0.1~esm1
	libzulucrypt1.2.0 – 5.7.0-1ubuntu0.1~esm1
	libzulucryptpluginmanager-dev – 5.7.0-1ubuntu0.1~esm1
	libzulucryptpluginmanager1.0.0 – 5.7.0-1ubuntu0.1~esm1
	zulucrypt-cli – 5.7.0-1ubuntu0.1~esm1
	zulucrypt-gui – 5.7.0-1ubuntu0.1~esm1
	zulumount-cli – 5.7.0-1ubuntu0.1~esm1
	zulumount-gui – 5.7.0-1ubuntu0.1~esm1
	zulupolkit – 5.7.0-1ubuntu0.1~esm1
	zulusafe-cli – 5.7.0-1ubuntu0.1~esm1
18.04 LTS bionic	libzulucrypt-dev – 5.4.0-2ubuntu0.1~esm2
	libzulucrypt-exe-dev – 5.4.0-2ubuntu0.1~esm2
	libzulucrypt-exe1.2.0 – 5.4.0-2ubuntu0.1~esm2
	libzulucrypt-plugins – 5.4.0-2ubuntu0.1~esm2
	libzulucrypt1.2.0 – 5.4.0-2ubuntu0.1~esm2
	libzulucryptpluginmanager-dev – 5.4.0-2ubuntu0.1~esm2
	libzulucryptpluginmanager1.0.0 – 5.4.0-2ubuntu0.1~esm2
	zulucrypt-cli – 5.4.0-2ubuntu0.1~esm2
	zulucrypt-gui – 5.4.0-2ubuntu0.1~esm2
	zulumount-cli – 5.4.0-2ubuntu0.1~esm2
	zulumount-gui – 5.4.0-2ubuntu0.1~esm2
	zulupolkit – 5.4.0-2ubuntu0.1~esm2
	zulusafe-cli – 5.4.0-2ubuntu0.1~esm2

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References

CVE-2025-53391

CVE-2025-53391