Skip to content
Heist/ feed
High

Bluetooth: hci_uart: clear HCI_UART_SENDING when write_work is canceled

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_uart: clear HCI_UART_SENDING when write_work is canceled HCI_UART_SENDING bit in tx_state means write_work is pending and blocks queueing it again. Currently this bit is not cleared when canceling the work in hci_uart_close(), which blocks future writes when device is reopened later if write_work was pending. Fix by clearing HCI_UART_SENDING when canceling the work. Also make clearing of tx_skb safe by using disable_work_sync + enable_work instead of just cancel_work_sync. hci_uart_flush() purges the proto tx queue so we can cancel the pending write_work there, instead of doing it just in hci_uart_close(). Re-enable and possibly requeue the work after queue flush.

Announced Source revision 1
Original source ↗

CVE-2026-68085

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-2026-68085

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": "81c7a3c22a0f2808cf4ae0b4908f59763b23606d",
        "lessThan": "d52446b3e735cfdbdc2a58342163803bc2e64249",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "192cb0f1ca706d9a1bc36ae0ad5f666d1e4fd894",
        "lessThan": "b9dd39cf1667e378b25a082ca796d495d578c5d3",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c1bb9336ae6b54a5f6a353c4bd4ed9a4307e429b",
        "lessThan": "714d861d35d937f23375a4517569b13917bbbe51",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c1bb9336ae6b54a5f6a353c4bd4ed9a4307e429b",
        "lessThan": "1b0d946d6f08bd39211385bc703a440911b41e46",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "78aad93e938f013d9272fe0ee168f27883afa95c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e2d19969c8d9198ecc3090bcd5312ecd503a3339",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c85cff648a2bc92322912db5f1727ad05afae7b6",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9d20d48be2c4a071fb015eb09bda2cecd25daf34",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7338031946bd06f6dff149e67b60c4cd083bfea8",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "6.12.92",
        "lessThan": "6.12.96",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "6.18.34",
        "lessThan": "6.18.39",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "5.10.258",
        "lessThan": "5.11",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "5.15.209",
        "lessThan": "5.16",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "6.1.175",
        "lessThan": "6.2",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "6.6.142",
        "lessThan": "6.7",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "7.0.11",
        "lessThan": "7.1",
        "versionType": "semver"
      }
    ],
    "programFiles": [
      "drivers/bluetooth/hci_ldisc.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": "6.12.96",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.39",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.1.4",
        "versionType": "semver",
        "lessThanOrEqual": "7.1.*"
      },
      {
        "status": "unaffected",
        "version": "7.2",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/bluetooth/hci_ldisc.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-68085

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#41108 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement