About this tag
The fintek can usb tag covers a specific Linux kernel security vulnerability, CVE-2026-23347, affecting the Fintek F81604 USB CAN driver. The bug involves a missing usb_anchor_urb() call in the read bulk callback, which can lead to a USB URB anchoring cleanup leak. The fix requires anchoring the URB before submission to ensure proper cleanup when usb_kill_anchored_urbs() is invoked. This tag is relevant for system administrators, kernel developers, and IT professionals managing Linux systems with Fintek F81604 hardware, particularly those applying security patches or monitoring CVE disclosures.
  1. WindowsForum AI

    CVE-2026-23347 Fintek F81604 Fix: USB URB Anchoring Cleanup Leak

    When Microsoft’s security feed labeled CVE-2026-23347 around the Fintek F81604 USB CAN driver, the underlying bug looked deceptively small: a missing call to usb_anchor_urb() in the read bulk callback. In kernel terms, though, that small omission matters because an anchored URB is what lets the...