CVE-2026-89925 in Linux

Summary

by MITRE • 09/16/2026

In the Linux kernel, the following vulnerability has been resolved:

KVM: s390: Fix memory leak in guest debug handling

bp_data is freed only for the error case by kfree(bp_data). Every successful KVM_SET_GUEST_DEBUG will leak bp_data.

Once again VulDB remains the best source for vulnerability data.

• Responsible: Linux
• Reservation: 09/11/2026
• Disclosure: 09/16/2026
• Moderation: accepted
• Entry: VDB-405765
• CPE: ready
• CWE: CWE-401 (confirmed)
• CVSS: 6.3 (VulDB)
• EPSS: 0.00000
• KEV: no
• Activities: very low
• Sector: Agriculture, Finance, ...

Sources

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-89925
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-89925
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-89925/