CVE-2026-98295 (GCVE-0-2026-98295)
Vulnerability from cvelistv5
Published
2026-10-06 08:45
Modified
2026-10-19 09:17
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
Impacted products
Vendor Product Version
Linux Linux Version: 9695ef876fd122cb7bbc04a4a93b8727d2e36bda
Version: 9695ef876fd122cb7bbc04a4a93b8727d2e36bda
Version: 9695ef876fd122cb7bbc04a4a93b8727d2e36bda
Version: 9695ef876fd122cb7bbc04a4a93b8727d2e36bda
Version: deb8156ebe5cb63a5988e7f86cc46aa062527c2b
Version: 6.1.188   ≤
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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"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "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": [
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              "status": "affected",
              "version": "6.4"
            },
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              "status": "unaffected",
              "version": "0",
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              "status": "unaffected",
              "version": "6.18.54",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.112",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "7.2.8",
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:17:06.302Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/24af375d7d8aa5f698e4dc41317102f44114351a"
        },
        {
          "url": "https://git.kernel.org/stable/c/dcaf10ef27f928568c25de3e9fc242e538de5c67"
        },
        {
          "url": "https://git.kernel.org/stable/c/82699d1b727ba5980b94f1eb8dc3d346f41b7c67"
        },
        {
          "url": "https://git.kernel.org/stable/c/d236517c264e41dc09833c708ef23bccb7a91219"
        }
      ],
      "title": "Bluetooth: coredump: Quiesce dump work on unregister",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98295",
    "datePublished": "2026-10-06T08:45:54.141Z",
    "dateReserved": "2026-09-25T10:25:14.337Z",
    "dateUpdated": "2026-10-19T09:17:06.302Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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