What is CVE-2026-52947?

CVE-2026-52947 is a security advisory published by Microsoft Security Response Center (MSRC) with Critical severity. net: qrtr: fix refcount saturation and potential UAF in qrtr_port_remove

Which CVE IDs does CVE-2026-52947 cover?

CVE-2026-52947 covers the following CVE IDs: CVE-2026-52947. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-52947?

CVE-2026-52947 has a CVSS v3 base score of 9.8, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-52947?

CVE-2026-52947 affects 1 product, including: azl3 kernel 6.6.141.1-1 on Azure Linux 3.0.

CVE-2026-52947CriticalCVSS 9.8

net: qrtr: fix refcount saturation and potential UAF in qrtr_port_remove

Vendor

Microsoft Security Response Center (MSRC)

Published

June 30, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-52947 →

🎯 Affected products1

azl3 kernel 6.6.141.1-1 on Azure Linux 3.0

✅ Remediation

KBCBL-Mariner Releases (Security Update) — fixed build 6.6.143.1-1

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-52947
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade