CVE-2026-98295 (GCVE-0-2026-98295)

Vulnerability from cvelistv5 – Published: 2026-10-06 08:45 – Updated: 2026-10-06 08:45
VLAI
Title
Bluetooth: coredump: Quiesce dump work on unregister
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.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6666 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 9695ef876fd122cb7bbc04a4a93b8727d2e36bda , < 24af375d7d8aa5f698e4dc41317102f44114351a (git)
Affected: 9695ef876fd122cb7bbc04a4a93b8727d2e36bda , < dcaf10ef27f928568c25de3e9fc242e538de5c67 (git)
Affected: 9695ef876fd122cb7bbc04a4a93b8727d2e36bda , < 82699d1b727ba5980b94f1eb8dc3d346f41b7c67 (git)
Affected: 9695ef876fd122cb7bbc04a4a93b8727d2e36bda , < d236517c264e41dc09833c708ef23bccb7a91219 (git)
Affected: deb8156ebe5cb63a5988e7f86cc46aa062527c2b (git)
Affected: 6.1.188 , < 6.2 (semver)
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Linux Linux Affected: 6.4
Unaffected: 0 , < 6.4 (semver)
Unaffected: 6.12.112 , ≤ 6.12.* (semver)
Unaffected: 6.18.54 , ≤ 6.18.* (semver)
Unaffected: 7.2.8 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc4 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "include/net/bluetooth/coredump.h",
            "net/bluetooth/coredump.c",
            "net/bluetooth/hci_core.c"
          ],
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          "vendor": "Linux",
          "versions": [
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          "programFiles": [
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            "net/bluetooth/coredump.c",
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          ],
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          "vendor": "Linux",
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      ],
      "cpeApplicability": [
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          "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-06T08:45:54.141Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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        },
        {
          "url": "https://git.kernel.org/stable/c/d236517c264e41dc09833c708ef23bccb7a91219"
        }
      ],
      "title": "Bluetooth: coredump: Quiesce dump work on unregister",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98295",
    "datePublished": "2026-10-06T08:45:54.141Z",
    "dateReserved": "2026-09-25T10:25:14.337Z",
    "dateUpdated": "2026-10-06T08:45:54.141Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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      "date": "2026-10-16",
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      "percentile": "0.06567"
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    "nvd": {
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        "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",
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      "cve": "CVE-2026-98295",
      "id": "CVE-2026-98295",
      "initial_release_date": "2026-10-06T00:00:00+00:00",
      "product_status:known_affected": "198",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Bluetooth: coredump: Quiesce dump work on unregister",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98295.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-10-09T16:53:15Z",
      "cve": "CVE-2026-98295",
      "id": "CVE-2026-98295",
      "initial_release_date": "2026-10-07T00:00:47Z",
      "product_status:known_affected": "30",
      "product_status:known_not_affected": "317",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-98295",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-98295.json",
      "version": "3"
    }
  }
}



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