{"schema":"threatline.record/2","record":{"id":"CVE-2026-98766","aliases":[],"summary":"usb: gadget: aspeed-vhub: cancel wake work on device removal","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: aspeed-vhub: cancel wake work on device removal\n\nwake_work is armed from the gadget .wakeup callback to resume suspended\ndownstream ports, and it is never cancelled in ast_vhub_remove(), so a\nwork item queued before or during removal can run after devm has freed\nvhub and its ports, a use-after-free.\n\nCancelling the work alone is not sufficient: usb_gadget_wakeup() takes\nno lock and the unbind path never clears wakeup_en, so a remote-wakeup\nrequest in flight on another CPU can re-arm the work after the cancel\nand before vhub is freed.\n\nast_vhub_del_dev() already clears d->registered under vhub->lock before\nunregistering the gadget. Refuse the wakeup in ast_vhub_udc_wakeup()\nonce d->registered is clear: the check and the schedule_work() are then\natomic against the unbind, so a wakeup that passed before the flag was\ncleared is drained by the cancel_work_sync() after the del_dev loop,\nand one that arrives later returns without arming. Also move INIT_WORK()\nto the top of ast_vhub_probe(), since the probe error path reuses\nast_vhub_remove() and would otherwise cancel a never-initialized work\nitem.\n\nThis issue was found by an in-house static analysis tool.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98766","source_modified_at":"2026-10-21T12:56:40.833Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"7ecca2a4080cb6b1fa174adc588fce9e9014c43c","lessThan":"0d39ac4f65f9357469518c70e42940e0d8b0e497","status":"affected","versionType":"git"},{"version":"7ecca2a4080cb6b1fa174adc588fce9e9014c43c","lessThan":"f343bfa3fc9f6255602d66f4a7dbe7ddef13ba41","status":"affected","versionType":"git"},{"version":"7ecca2a4080cb6b1fa174adc588fce9e9014c43c","lessThan":"474e9e1852fb5ba0bfb26f123dd0cb361d0f4f4d","status":"affected","versionType":"git"},{"version":"7ecca2a4080cb6b1fa174adc588fce9e9014c43c","lessThan":"c81504dfd2d93e345c98e7a012c2f2e74ce5b6a1","status":"affected","versionType":"git"},{"version":"7ecca2a4080cb6b1fa174adc588fce9e9014c43c","lessThan":"20388c8d1d74c203fec8194c45cd31afdfab934e","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98766","source_modified_at":"2026-10-21T12:56:40.833Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"4.18","status":"affected"},{"version":"0","lessThan":"4.18","status":"unaffected","versionType":"semver"},{"version":"6.6.160","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.113","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.56","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.10","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98766","source_modified_at":"2026-10-21T12:56:40.833Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"0d39ac4f65f9357469518c70e42940e0d8b0e497","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98766","source_modified_at":"2026-10-21T12:56:40.833Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"474e9e1852fb5ba0bfb26f123dd0cb361d0f4f4d","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98766","source_modified_at":"2026-10-21T12:56:40.833Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"20388c8d1d74c203fec8194c45cd31afdfab934e","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00168,"percentile":0.05739,"score_date":"2026-10-23"},"published_at":"2026-10-18T15:47:59.061Z","modified_at":"2026-10-21T12:56:40.833Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98766","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-21T12:56:40.833Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98766","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/0d39ac4f65f9357469518c70e42940e0d8b0e497"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/f343bfa3fc9f6255602d66f4a7dbe7ddef13ba41"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/474e9e1852fb5ba0bfb26f123dd0cb361d0f4f4d"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/c81504dfd2d93e345c98e7a012c2f2e74ce5b6a1"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/20388c8d1d74c203fec8194c45cd31afdfab934e"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-21T12:56:40.833Z","content_hash":"bec4ecde65d224899c47e25f16b15906ce9f8019623a11039950421e2c3fe2db"}}