What is CVE-2026-52946?

CVE-2026-52946 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. fs/fcntl: fix SOFTIRQ-unsafe lock order in fasync signaling

Which CVE IDs does CVE-2026-52946 cover?

CVE-2026-52946 covers the following CVE IDs: CVE-2026-52946. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-52946?

CVE-2026-52946 has a CVSS v3 base score of 5.9, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-52946?

CVE-2026-52946 affects 2 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.

CVE-2026-52946MediumCVSS 5.9

fs/fcntl: fix SOFTIRQ-unsafe lock order in fasync signaling

Vendor

Microsoft Security Response Center (MSRC)

Published

June 30, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-52946 →

🎯 Affected products2

azl3 kernel 6.6.141.1-1 on Azure Linux 3.0
azl3 kernel 6.6.143.1-1 on Azure Linux 3.0

🔗 References (1)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-52946