cve 2026 46137

CVE-2026-46137 is a Linux kernel vulnerability in the Multipath TCP path-manager, involving a race condition in the ADD_ADDR retransmission timer. The fix involves taking the socket lock in softirq context and retrying when user context owns the socket. While the advisory appears minor, the tag content emphasizes that Windows administrators should inventory Linux components in their environments, such as WSL, containers, appliances, edge gateways, and vendor-managed virtual machines, as these inherit Linux networking risks. The key takeaway is not panic but proactive inventory management to understand exposure to vulnerabilities like CVE-2026-46137.