CVE-2026-98297Bluetooth: hci_core: Fix queuing tx_work after workqueue is drained
Updated under an hour ago ()
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 6, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 9cebe4680bb9a72f80c6541eb24af06db7a1fbc9 before ab0678a0701ac4de499428dc1b321659bb74d272; from 47330cc875b36a1cf7b3543cb2cf90a7c603ce0e before e220c1242a643d97102a79f09b7ef3aa31276961; from 525daaea459fc215f432de1b8debbd9144bf97b0 before cbb325bc150e8c0dbce004ac0e5516bcffc0de31; from 525daaea459fc215f432de1b8debbd9144bf97b0 before 6610c6fe4b8936c232048e6049bf77c70a6f759c; 60bceb9a4c693e68cc90ba4b2dfb9e000e8638ff; from 6.12.93 before 6.12.112; from 6.18.35 before 6.18.54; from 7.0.12 before 7.1 | CNA record |
References
- https://git.kernel.org/stable/c/ab0678a0701ac4de499428dc1b321659bb74d272
- https://git.kernel.org/stable/c/e220c1242a643d97102a79f09b7ef3aa31276961
- https://git.kernel.org/stable/c/cbb325bc150e8c0dbce004ac0e5516bcffc0de31
- https://git.kernel.org/stable/c/6610c6fe4b8936c232048e6049bf77c70a6f759c
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.