cve 2025 40104

CVE-2025-40104 is a Linux kernel vulnerability affecting the ixgbevf driver, which handles mailbox communication in Intel network adapters. The flaw involves a missing feature-negotiation operation that can cause compatibility issues. Microsoft has acknowledged that Azure Linux, which includes the affected open-source library, is potentially vulnerable. However, this does not confirm that other Microsoft products are impacted. The fix adds a proper mailbox negotiation step to ensure stable driver operation. Discussions on WindowsForum.com focus on understanding the scope of the vulnerability, the technical details of the patch, and clarifying Microsoft's advisory to avoid misinterpretation about which products are affected.