CVE-2026-98297 (GCVE-0-2026-98297)

Vulnerability from cvelistv5 – Published: 2026-10-06 08:45 – Updated: 2026-10-30 12:38
VLAI
Title
Bluetooth: hci_core: Fix queuing tx_work after workqueue is drained
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_core: Fix queuing tx_work after workqueue is drained hci_send_acl(), hci_send_sco() and hci_send_iso() queue hdev->tx_work unconditionally. They can run from the L2CAP/SCO/ISO socket send path while hci_dev_close_sync() is draining hdev->workqueue (HCIDEVDOWN racing with a socket write). Since that queue_work() is not chained work from the tx_work worker itself, __queue_work() sees the queue marked __WQ_DRAINING, warns "cannot queue %ps on wq %s", and drops the work: WARNING: CPU: 1 PID: 5985 at kernel/workqueue.c:2352 __queue_work Call Trace: queue_work_on l2cap_chan_send l2cap_sock_sendmsg ... hci_dev_close_sync() already sets HCI_CMD_DRAIN_WORKQUEUE before draining, but only hci_cmd_work() and handle_cmd_cnt_and_timer() check it before queuing. Route the tx_work producers through the same guard via a shared hci_sched_tx() helper.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6637 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: ccf07dfb9d7d1e2c7a1eeb782f90d9b614ebba9c , < 9943b4c70ad972f368705da8605054f865b08dad (git)
Affected: 7b81c1378b79c3143ca3fdb3d18ac0f01cbabb21 , < 8010212197d4a3ee714f78ed77048d0b712ff925 (git)
Affected: 9cebe4680bb9a72f80c6541eb24af06db7a1fbc9 , < ab0678a0701ac4de499428dc1b321659bb74d272 (git)
Affected: 47330cc875b36a1cf7b3543cb2cf90a7c603ce0e , < e220c1242a643d97102a79f09b7ef3aa31276961 (git)
Affected: 525daaea459fc215f432de1b8debbd9144bf97b0 , < cbb325bc150e8c0dbce004ac0e5516bcffc0de31 (git)
Affected: 525daaea459fc215f432de1b8debbd9144bf97b0 , < 6610c6fe4b8936c232048e6049bf77c70a6f759c (git)
Affected: 60bceb9a4c693e68cc90ba4b2dfb9e000e8638ff (git)
Affected: 6.12.93 , < 6.12.112 (semver)
Affected: 6.18.35 , < 6.18.54 (semver)
Affected: 7.0.12 , < 7.1 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 7.1
Unaffected: 0 , < 7.1 (semver)
Unaffected: 6.12.112 , ≤ 6.12.* (semver)
Unaffected: 6.18.54 , ≤ 6.18.* (semver)
Unaffected: 7.2.8 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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          "value": "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."
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      "cve": "CVE-2026-98297",
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}



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