Critical Security Update: SUSE Linux Micro 6.0 GPG2 Patch (CVE-2025-30258)

 

Critical SUSE Linux Micro 6.0 GPG2 security update fixes CVE-2025-30258 & certificate flaws. Learn patch instructions, CVSS scores, and why this update is essential for Linux security.

A newly released security update for SUSE Linux Micro 6.0 addresses vulnerabilities in GPG2 (GNU Privacy Guard 2), including a moderate-risk CVE (CVE-2025-30258) and several bug fixes. 

This patch ensures enhanced encryption security and certificate validation, critical for enterprise Linux deployments.

Key Fixes & Vulnerabilities Addressed

✔ CVE-2025-30258 (CVSS: 2.7) – Allows improper ADSK subkey usage, posing a potential security risk.

✔ Bug #1239119 – Corrects certificate validation logic to prevent expired SKS certificates.

✔ Bug #1243069 – Resolves cross-referencing issues in GPG2 key management.

🔹 Affected Products:

• SUSE Linux Micro 6.0 (x86_64, aarch64, s390x)

🔹 CVSS Scores:

• SUSE Rating: 1.8 (Low)

• NVD Rating: 2.7 (Low)

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How to Install the Update

To secure your system, apply the patch using one of the following methods:

Recommended Installation Methods

1. YaST Online Update – Automated patching via SUSE’s native tool.

2. Zypper Patch Command – Manual update via terminal:

   bash

   zypper in -t patch SUSE-SLE-Micro-6.0-374=1

Updated Packages

• gpg2-2.4.4-5.1

• gpg2-debuginfo-2.4.4-5.1

• gpg2-debugsource-2.4.4-5.1

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Why This Update Matters for Linux Security

GPG2 is a critical component for cryptographic operations in Linux. This patch:
✅ Prevents unauthorized subkey usage (CVE-2025-30258)
✅ Enhances certificate trust validation
✅ Improves compliance with enterprise security policies

Pro Tip: Always verify GPG signatures after updates to ensure integrity.

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Additional References & Resources

📌 CVE Details: SUSE Security Advisory
📌 Bug Reports:

• bsc#1236931

• bsc#1239119

• bsc#1243069

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FAQ

Q: Is this update mandatory?

A: Yes, if you use GPG2 for encryption or package validation.

Q: Does this affect other SUSE distributions?

A: No, this patch is specific to SUSE Linux Micro 6.0.

Q: How do I check if the update was applied?

A: Run:

bash

zypper patches | grep SUSE-SLE-Micro-6.0-374