{"schema":"threatline.record/2","record":{"id":"CVE-2026-97977","aliases":[],"summary":"Bluetooth: btusb: Fix UAF of btusb_data by rx_work","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btusb: Fix UAF of btusb_data by rx_work\n\nbtusb_close() and btusb_flush() cancel data->rx_work with the\nasynchronous cancel_delayed_work(), so if btusb_rx_work() is already\nrunning on another CPU it keeps running after the cancel returns.\n\nbtusb_disconnect() calls hci_unregister_dev(), which invokes\nbtusb_close(), and then frees the btusb_data. A still running\nbtusb_rx_work() then dereferences the freed data:\n\n\twhile ((skb = skb_dequeue(&data->acl_q)))\n\t\tdata->recv_acl(data->hdev, skb);\n\nUse cancel_delayed_work_sync() instead. In btusb_close() the cancel also\nhas to happen after btusb_stop_traffic(), otherwise an URB completion\nracing with the cancel can requeue the work right after it has been\nwaited for.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97977","source_modified_at":"2026-10-19T09:11:44.507Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"800fe5ec302e1ebbf5e3f891f886deecd49c7132","lessThan":"fc654a72a8d979db15e2773a481e931abaf5a9e8","status":"affected","versionType":"git"},{"version":"800fe5ec302e1ebbf5e3f891f886deecd49c7132","lessThan":"5242050195a711e9cd6a9935f689ab6656b94a91","status":"affected","versionType":"git"},{"version":"800fe5ec302e1ebbf5e3f891f886deecd49c7132","lessThan":"472d005622525b7be155cac99dde2252b0163bd1","status":"affected","versionType":"git"},{"version":"800fe5ec302e1ebbf5e3f891f886deecd49c7132","lessThan":"93b59937bda3fffc6386c79f5544a39bc680c8e8","status":"affected","versionType":"git"},{"version":"800fe5ec302e1ebbf5e3f891f886deecd49c7132","lessThan":"fa391adb9c755515a89993634745e9079e5ef37c","status":"affected","versionType":"git"},{"version":"800fe5ec302e1ebbf5e3f891f886deecd49c7132","lessThan":"1c12c3117639e78940959d956519c758c57d0849","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97977","source_modified_at":"2026-10-19T09:11:44.507Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"5.17","status":"affected"},{"version":"0","lessThan":"5.17","status":"unaffected","versionType":"semver"},{"version":"6.1.189","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.158","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.111","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.53","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.7","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-2026-97977","source_modified_at":"2026-10-19T09:11:44.507Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"5242050195a711e9cd6a9935f689ab6656b94a91","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97977","source_modified_at":"2026-10-19T09:11:44.507Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"472d005622525b7be155cac99dde2252b0163bd1","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97977","source_modified_at":"2026-10-19T09:11:44.507Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"93b59937bda3fffc6386c79f5544a39bc680c8e8","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97977","source_modified_at":"2026-10-19T09:11:44.507Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"1c12c3117639e78940959d956519c758c57d0849","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00172,"percentile":0.06314,"score_date":"2026-10-23"},"published_at":"2026-09-25T10:23:15.198Z","modified_at":"2026-10-19T09:11:44.507Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-97977","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:11:44.507Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-97977","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/fc654a72a8d979db15e2773a481e931abaf5a9e8"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/5242050195a711e9cd6a9935f689ab6656b94a91"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/472d005622525b7be155cac99dde2252b0163bd1"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/93b59937bda3fffc6386c79f5544a39bc680c8e8"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/fa391adb9c755515a89993634745e9079e5ef37c"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/1c12c3117639e78940959d956519c758c57d0849"}],"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":"2026-10-19T09:11:44.507Z","content_hash":"888a367fe10c083bad3b1b3ec4702d86e11e648d702ab352841e0ca83bf55931"}}