What is CVE-2026-53109?

CVE-2026-53109 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. powerpc/pgtable-frag: Fix bad page state in pte_frag_destroy

Which CVE IDs does CVE-2026-53109 cover?

CVE-2026-53109 covers the following CVE IDs: CVE-2026-53109. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-53109?

CVE-2026-53109 has a CVSS v3 base score of 5.5, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-53109?

CVE-2026-53109 affects 6 products, including: azl3 kernel 6.6.141.1-1 on Azure Linux 3.0; azl3 kernel 6.6.143.1-1 on Azure Linux 3.0; azl3 kernel 6.6.144.1-1 on Azure Linux 3.0; azl3 kernel 6.6.150.1-1 on Azure Linux 3.0; azl3 kernel 6.6.152.1-1 on Azure Linux 3.0; and others — see the full list on the advisory page.

CVE-2026-53109MediumCVSS 5.5

powerpc/pgtable-frag: Fix bad page state in pte_frag_destroy

Vendor

Microsoft Security Response Center (MSRC)

Published

June 30, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-53109 →

🎯 Affected products6

azl3 kernel 6.6.141.1-1 on Azure Linux 3.0
azl3 kernel 6.6.143.1-1 on Azure Linux 3.0
azl3 kernel 6.6.144.1-1 on Azure Linux 3.0
azl3 kernel 6.6.150.1-1 on Azure Linux 3.0
azl3 kernel 6.6.152.1-1 on Azure Linux 3.0
azl3 kernel 6.6.157.1-1 on Azure Linux 3.0

✅ Remediation

KBRelease Notes (Security Update)

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-53109
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade