Bluetooth: hci_core: Fix queuing tx_work after workqueue is drained
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.
CVE-2026-98297
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-98297
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "7b81c1378b79c3143ca3fdb3d18ac0f01cbabb21",
"lessThan": "8010212197d4a3ee714f78ed77048d0b712ff925",
"versionType": "git"
},
{
"status": "affected",
"version": "9cebe4680bb9a72f80c6541eb24af06db7a1fbc9",
"lessThan": "ab0678a0701ac4de499428dc1b321659bb74d272",
"versionType": "git"
},
{
"status": "affected",
"version": "47330cc875b36a1cf7b3543cb2cf90a7c603ce0e",
"lessThan": "e220c1242a643d97102a79f09b7ef3aa31276961",
"versionType": "git"
},
{
"status": "affected",
"version": "525daaea459fc215f432de1b8debbd9144bf97b0",
"lessThan": "cbb325bc150e8c0dbce004ac0e5516bcffc0de31",
"versionType": "git"
},
{
"status": "affected",
"version": "525daaea459fc215f432de1b8debbd9144bf97b0",
"lessThan": "6610c6fe4b8936c232048e6049bf77c70a6f759c",
"versionType": "git"
},
{
"status": "affected",
"version": "60bceb9a4c693e68cc90ba4b2dfb9e000e8638ff",
"versionType": "git"
},
{
"status": "affected",
"version": "6.12.93",
"lessThan": "6.12.112",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.18.35",
"lessThan": "6.18.54",
"versionType": "semver"
},
{
"status": "affected",
"version": "7.0.12",
"lessThan": "7.1",
"versionType": "semver"
}
],
"programFiles": [
"net/bluetooth/hci_core.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "7.1"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "7.1",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.112",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.54",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.8",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/bluetooth/hci_core.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98297
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #48873 · Revision 1
- Added to Heist Feed
- Publisher date