Linux Kernel KSMBD Flaw Lets Remote Attackers Drain Server Resources

A critical vulnerability in the Linux kernel’s KSMBD implementation has been discovered that allows remote attackers to completely exhaust server connection resources through a simple denial-of-service attack. The flaw, tracked as CVE-2025-38501 and dubbed “KSMBDrain,” enables malicious actors to render SMB services unavailable by consuming all available connections. How the Attack Works The vulnerability exploits […]

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