{"id":"CVE-2026-89737","summary":"usb: typec: thunderbolt: Disable work before freeing tbt on remove","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: thunderbolt: Disable work before freeing tbt on remove\n\ntbt_altmode_remove() drops the plug and cable references without\ndraining tbt-\u003ework. The work function dereferences those references,\nand can also requeue itself in its error path. The VDM callbacks can\nqueue the same work item.\n\nDisable and drain tbt-\u003ework before dropping the references. This waits\nfor an existing invocation and prevents subsequent schedule_work()\ncalls from queueing it during teardown.\n\nThis issue was found by an in-house static analysis tool and confirmed\nby manual code review.","modified":"2026-09-13T03:47:20.864807917Z","published":"2026-09-11T19:46:45.250Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89737.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0a25484fe22f621e151367a59a82330a22ac80bc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/92090f6ff2acc81e9dd99881dcfb4f8c1bdaabd3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ebb840d982a612261cfc8a7687735a140c6c7024"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89737.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89737"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"100e257386595b3f1865ca8a991e2ba74f9701ff"},{"fixed":"ebb840d982a612261cfc8a7687735a140c6c7024"},{"fixed":"0a25484fe22f621e151367a59a82330a22ac80bc"},{"fixed":"92090f6ff2acc81e9dd99881dcfb4f8c1bdaabd3"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89737.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.14.0"},{"fixed":"6.18.50"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89737.json"}}],"schema_version":"1.9.0"}