FKIE_CVE-2026-98295

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: coredump: Quiesce dump work on unregister hci_devcd_handle_pkt_init() arms dump_timeout and coredump producers queue dump_rx without holding an hdev reference. Unregister leaves both works live, so disconnecting during an active dump lets them access hdev after hci_release_dev() frees it. Shut down coredump processing during unregister. Close the producer gate under dump_q.lock before disabling both works, then free the active buffer and queued packets under hci_dev_lock. Serializing the gate with enqueue prevents controller-specific workers from adding packets after the final purge.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/24af375d7d8aa5f698e4dc41317102f44114351a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/82699d1b727ba5980b94f1eb8dc3d346f41b7c67
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d236517c264e41dc09833c708ef23bccb7a91219
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dcaf10ef27f928568c25de3e9fc242e538de5c67
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "include/net/bluetooth/coredump.h",
            "net/bluetooth/coredump.c",
            "net/bluetooth/hci_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "24af375d7d8aa5f698e4dc41317102f44114351a",
              "status": "affected",
              "version": "9695ef876fd122cb7bbc04a4a93b8727d2e36bda",
              "versionType": "git"
            },
            {
              "lessThan": "dcaf10ef27f928568c25de3e9fc242e538de5c67",
              "status": "affected",
              "version": "9695ef876fd122cb7bbc04a4a93b8727d2e36bda",
              "versionType": "git"
            },
            {
              "lessThan": "82699d1b727ba5980b94f1eb8dc3d346f41b7c67",
              "status": "affected",
              "version": "9695ef876fd122cb7bbc04a4a93b8727d2e36bda",
              "versionType": "git"
            },
            {
              "lessThan": "d236517c264e41dc09833c708ef23bccb7a91219",
              "status": "affected",
              "version": "9695ef876fd122cb7bbc04a4a93b8727d2e36bda",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "deb8156ebe5cb63a5988e7f86cc46aa062527c2b",
              "versionType": "git"
            },
            {
              "lessThan": "6.2",
              "status": "affected",
              "version": "6.1.188",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "include/net/bluetooth/coredump.h",
            "net/bluetooth/coredump.c",
            "net/bluetooth/hci_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
            {
              "lessThan": "6.4",
              "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: coredump: Quiesce dump work on unregister\n\nhci_devcd_handle_pkt_init() arms dump_timeout and coredump producers\nqueue dump_rx without holding an hdev reference. Unregister leaves both\nworks live, so disconnecting during an active dump lets them access hdev\nafter hci_release_dev() frees it.\n\nShut down coredump processing during unregister. Close the producer gate\nunder dump_q.lock before disabling both works, then free the active buffer\nand queued packets under hci_dev_lock. Serializing the gate with enqueue\nprevents controller-specific workers from adding packets after the final\npurge."
    }
  ],
  "id": "CVE-2026-98295",
  "lastModified": "2026-10-06T09:18:20.133",
  "metrics": {},
  "published": "2026-10-06T09:18:20.133",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/24af375d7d8aa5f698e4dc41317102f44114351a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/82699d1b727ba5980b94f1eb8dc3d346f41b7c67"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d236517c264e41dc09833c708ef23bccb7a91219"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/dcaf10ef27f928568c25de3e9fc242e538de5c67"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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