FKIE_CVE-2026-98297

Vulnerability from fkie_nvd - Published: 2026-10-06 09:18 - Updated: 2026-10-06 09:18
Severity
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6610c6fe4b8936c232048e6049bf77c70a6f759c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ab0678a0701ac4de499428dc1b321659bb74d272
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cbb325bc150e8c0dbce004ac0e5516bcffc0de31
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e220c1242a643d97102a79f09b7ef3aa31276961
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/hci_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ab0678a0701ac4de499428dc1b321659bb74d272",
              "status": "affected",
              "version": "9cebe4680bb9a72f80c6541eb24af06db7a1fbc9",
              "versionType": "git"
            },
            {
              "lessThan": "e220c1242a643d97102a79f09b7ef3aa31276961",
              "status": "affected",
              "version": "47330cc875b36a1cf7b3543cb2cf90a7c603ce0e",
              "versionType": "git"
            },
            {
              "lessThan": "cbb325bc150e8c0dbce004ac0e5516bcffc0de31",
              "status": "affected",
              "version": "525daaea459fc215f432de1b8debbd9144bf97b0",
              "versionType": "git"
            },
            {
              "lessThan": "6610c6fe4b8936c232048e6049bf77c70a6f759c",
              "status": "affected",
              "version": "525daaea459fc215f432de1b8debbd9144bf97b0",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "60bceb9a4c693e68cc90ba4b2dfb9e000e8638ff",
              "versionType": "git"
            },
            {
              "lessThan": "6.12.112",
              "status": "affected",
              "version": "6.12.93",
              "versionType": "semver"
            },
            {
              "lessThan": "6.18.54",
              "status": "affected",
              "version": "6.18.35",
              "versionType": "semver"
            },
            {
              "lessThan": "7.1",
              "status": "affected",
              "version": "7.0.12",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/hci_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7.1"
            },
            {
              "lessThan": "7.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.112",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.54",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc4",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "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."
    }
  ],
  "id": "CVE-2026-98297",
  "lastModified": "2026-10-06T09:18:20.400",
  "metrics": {},
  "published": "2026-10-06T09:18:20.400",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6610c6fe4b8936c232048e6049bf77c70a6f759c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ab0678a0701ac4de499428dc1b321659bb74d272"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/cbb325bc150e8c0dbce004ac0e5516bcffc0de31"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e220c1242a643d97102a79f09b7ef3aa31276961"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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