i40e driver

About this tag
The i40e driver is Intel's Ethernet driver for 10/25/40GbE adapters, commonly used in enterprise and virtualized environments. Discussions on WindowsForum.com cover security vulnerabilities affecting this driver, including CVE-2026-23313, which involves a preempt count leak in the NAPI poll tracepoint, and CVE-2025-39901, a debugfs-related issue in Azure Linux. These threads focus on kernel fixes, attestation, and mitigation strategies, highlighting the driver's role in networking stack reliability and its presence in Microsoft's update ecosystem.

  1. CVE-2026-23313: i40e NAPI tracepoint preempt count leak kernel fix explained

    CVE-2026-23313 is a deceptively small Linux kernel fix with outsized value for anyone tracking networking stack reliability, especially in enterprise and virtualized environments. Microsoft’s Security Update Guide identifies the issue as “i40e: Fix preempt count leak in napi poll tracepoint,”...
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    • cve-2026-23313 i40e driver linux kernel napi tracepoint
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    • Forum: Security Alerts

  2. CVE-2025-39901: Azure Linux i40e Debugfs Attestation and Mitigation

    Microsoft’s initial mapping of CVE-2025-39901 names Azure Linux as a confirmed carrier of the affected i40e debugfs code, but that attestation is precisely that — a scoped inventory statement for a single product family — not definitive proof that no other Microsoft-distributed kernel artifact...