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CVE-2026-89737

usb: typec: thunderbolt: Disable work before freeing tbt on remove PUBLISHED

Description (CNA)

In the Linux kernel, the following vulnerability has been resolved: usb: typec: thunderbolt: Disable work before freeing tbt on remove tbt_altmode_remove() drops the plug and cable references without draining tbt->work. The work function dereferences those references, and can also requeue itself in its error path. The VDM callbacks can queue the same work item. Disable and drain tbt->work before dropping the references. This waits for an existing invocation and prevents subsequent schedule_work() calls from queueing it during teardown. This issue was found by an in-house static analysis tool and confirmed by manual code review.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 100e257386595b3f1865ca8a991e2ba74f9701ff before ebb840d982a612261cfc8a7687735a140c6c7024; affected 100e257386595b3f1865ca8a991e2ba74f9701ff before 0a25484fe22f621e151367a59a82330a22ac80bc; affected 100e257386595b3f1865ca8a991e2ba74f9701ff before 92090f6ff2acc81e9dd99881dcfb4f8c1bdaabd3
Linux / Linuxaffected 6.14; unaffected 0 before 6.14; unaffected 6.18.50 through 6.18.*; unaffected 7.2.4 through 7.2.*; unaffected 7.3 through *

CWE

No CWE identifiers supplied.

References