{"id":"CVE-2026-89737","revision":"0db32fd2129d44ec95723906620d7a8d","records":[{"revision":"0db32fd2129d44ec95723906620d7a8d","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89737","aliases":[],"title":"usb: typec: thunderbolt: Disable work before freeing tbt on remove","description":"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->work. 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->work 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.","state":0,"publishedAt":"2026-09-11T19:46:45.25+00:00","modifiedAt":"2026-10-19T08:51:51.314+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/usb/typec/altmodes/thunderbolt.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"100e257386595b3f1865ca8a991e2ba74f9701ff\",\n                            \"lessThan\": \"ebb840d982a612261cfc8a7687735a140c6c7024\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"100e257386595b3f1865ca8a991e2ba74f9701ff\",\n                            \"lessThan\": \"0a25484fe22f621e151367a59a82330a22ac80bc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"100e257386595b3f1865ca8a991e2ba74f9701ff\",\n                            \"lessThan\": \"92090f6ff2acc81e9dd99881dcfb4f8c1bdaabd3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/usb/typec/altmodes/thunderbolt.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.14\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.14\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.50\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/ebb840d982a612261cfc8a7687735a140c6c7024","https://git.kernel.org/stable/c/0a25484fe22f621e151367a59a82330a22ac80bc","https://git.kernel.org/stable/c/92090f6ff2acc81e9dd99881dcfb4f8c1bdaabd3"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89737","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89737","identifiers":["CVE-2026-89737"]},"retained":false,"historicalAffected":[]}],"coverage":[]}