What is CVE-2026-43021?

CVE-2026-43021 is a security advisory published by Microsoft Security Response Center (MSRC). Bluetooth: hci_sync: fix leaks when hci_cmd_sync_queue_once fails

Which CVE IDs does CVE-2026-43021 cover?

CVE-2026-43021 covers the following CVE IDs: CVE-2026-43021. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

Which products are affected by CVE-2026-43021?

CVE-2026-43021 affects 1 product, including: azl3 kernel 6.6.134.1-2 on Azure Linux 3.0.

CVE-2026-43021

Bluetooth: hci_sync: fix leaks when hci_cmd_sync_queue_once fails

Vendor

Microsoft Security Response Center (MSRC)

Published

May 22, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-43021 →

🎯 Affected products1

azl3 kernel 6.6.134.1-2 on Azure Linux 3.0

🔗 References (1)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-43021