{"id":"CVE-2026-98297","summary":"Bluetooth: hci_core: Fix queuing tx_work after workqueue is drained","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_core: Fix queuing tx_work after workqueue is drained\n\nhci_send_acl(), hci_send_sco() and hci_send_iso() queue hdev-\u003etx_work\nunconditionally. They can run from the L2CAP/SCO/ISO socket send path\nwhile hci_dev_close_sync() is draining hdev-\u003eworkqueue (HCIDEVDOWN\nracing with a socket write). Since that queue_work() is not chained\nwork from the tx_work worker itself, __queue_work() sees the queue\nmarked __WQ_DRAINING, warns \"cannot queue %ps on wq %s\", and drops\nthe work:\n\n  WARNING: CPU: 1 PID: 5985 at kernel/workqueue.c:2352 __queue_work\n  Call Trace:\n   queue_work_on\n   l2cap_chan_send\n   l2cap_sock_sendmsg\n   ...\n\nhci_dev_close_sync() already sets HCI_CMD_DRAIN_WORKQUEUE before\ndraining, but only hci_cmd_work() and handle_cmd_cnt_and_timer()\ncheck it before queuing. Route the tx_work producers through the\nsame guard via a shared hci_sched_tx() helper.","modified":"2026-10-08T02:53:33.294563350Z","published":"2026-10-06T08:45:55.723Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98297.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/6610c6fe4b8936c232048e6049bf77c70a6f759c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ab0678a0701ac4de499428dc1b321659bb74d272"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cbb325bc150e8c0dbce004ac0e5516bcffc0de31"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e220c1242a643d97102a79f09b7ef3aa31276961"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98297.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98297"},{"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":"9cebe4680bb9a72f80c6541eb24af06db7a1fbc9"},{"fixed":"ab0678a0701ac4de499428dc1b321659bb74d272"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"47330cc875b36a1cf7b3543cb2cf90a7c603ce0e"},{"fixed":"e220c1242a643d97102a79f09b7ef3aa31276961"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"525daaea459fc215f432de1b8debbd9144bf97b0"},{"fixed":"cbb325bc150e8c0dbce004ac0e5516bcffc0de31"},{"fixed":"6610c6fe4b8936c232048e6049bf77c70a6f759c"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"6.12.93"},{"fixed":"6.12.112"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"6.18.35"},{"fixed":"6.18.54"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"7.0.12"},{"fixed":"7.1"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"60bceb9a4c693e68cc90ba4b2dfb9e000e8638ff"}]}],"versions":["v6.12.111","v6.12.110","v6.12.109","v6.12.108","v6.12.107","v6.12.106","v6.12.105","v6.12.104","v6.12.103","v6.12.102","v6.12.101","v6.12.100","v6.12.99","v6.12.98","v6.12.97","v6.12.96","v6.12.95","v6.12.94","v6.12.93","v6.18.53","v6.18.52","v6.18.51","v6.18.50","v6.18.49","v6.18.48","v6.18.47","v6.18.46","v6.18.45","v6.18.44","v6.18.43","v6.18.42","v6.18.41","v6.18.40","v6.18.39","v6.18.38","v6.18.37","v6.18.36","v6.18.35","v7.0.14","v7.0.13","v7.0.12"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98297.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.112"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.54"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.8"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98297.json"}}],"schema_version":"1.9.0"}