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CVE-2025-38501 is a resource-exhaustion vulnerability in the Linux kernel's ksmbd SMB server. Insufficient limits on repeated connections from a single client IP address allow those connections to exhaust the server's maximum connection capacity, preventing legitimate clients from establishing connections. The fix limits repeated connections from clients sharing the same IP address.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository provides a proof-of-concept exploit for CVE-2025-38501, a denial-of-service vulnerability in the Linux KSMBD server (the in-kernel SMB server). The exploit consists of a single Python script (poc.py) that uses the Scapy library to perform a TCP 3-way handshake with the target's SMB port (445) and then leaves the connection open, thereby consuming a connection slot on the server. By repeatedly initiating such connections, an attacker can exhaust the server's maximum connection limit, resulting in a denial-of-service condition. The script requires root privileges to run and the user must specify the target server's IP address. The README provides background on the vulnerability, affected versions, and usage instructions. No hardcoded credentials or additional endpoints are present; the exploit is purely network-based and targets the SMB service on the specified IP and port.
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4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability affecting Echo linux packages, rated High by Tenable plugin 465276. The content does not describe the underlying flaw or its impact. The recommended fix is to update linux and related packages to version 6.1.148-1 or later. The patch and vulnerability publication dates are September 15, 2025.
A denial-of-service vulnerability in Linux KSMBD referenced as causing SMB connection exhaustion via many/half-open TCP handshakes, detected by high-volume port 445 connection attempts.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.