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fintek can usb

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.
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    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...
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    • cve security fintek can usb linux kernel usb anchors
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    • Forum: Security Alerts
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