What’s Vulnerable › Vulnerabilities

CVE-2021-25316: Local DoS of VM live migration due to use of static tmp files in detach_disks.sh in s390-tools

• Severity: low (CVSS 3.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-04-14 · updated 2026-06-17
• Weakness: CWE-377

Description

A Insecure Temporary File vulnerability in s390-tools of SUSE Linux Enterprise Server 12-SP5, SUSE Linux Enterprise Server 15-SP2 allows local attackers to prevent VM live migrations This issue affects: SUSE Linux Enterprise Server 12-SP5 s390-tools versions prior to 2.1.0-18.29.1. SUSE Linux Enterprise Server 15-SP2 s390-tools versions prior to 2.11.0-9.20.1.

Affected products

• SUSE S390-Tools: before 2.1.0-18.29.1; before 2.11.0-9.20.1 — fixed in 2.1.0-18.29.1, 2.11.0-9.20.1

How to fix

Upgrade to a fixed version: SUSE S390-Tools 2.1.0-18.29.1, 2.11.0-9.20.1. Check the vendor advisory for mitigations.

References

• https://bugzilla.suse.com/show_bug.cgi?id=1182777
• https://bugzilla.suse.com/show_bug.cgi?id=1182777

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