FKIE_CVE-2025-40318

Vulnerability from fkie_nvd - Published: 2025-12-08 01:16 - Updated: 2026-06-17 09:21
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: fix race in hci_cmd_sync_dequeue_once hci_cmd_sync_dequeue_once() does lookup and then cancel the entry under two separate lock sections. Meanwhile, hci_cmd_sync_work() can also delete the same entry, leading to double list_del() and "UAF". Fix this by holding cmd_sync_work_lock across both lookup and cancel, so that the entry cannot be removed concurrently.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/09b0cd1297b4dbfe736aeaa0ceeab2265f47f772
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0a94f7e017438935c09ef833a1aa908ad9875213
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/932c0a4f77ac13e526fdd5b42914d29c9821d389
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9cd536970192b72257afcdfba0bfc09993e6f19c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ae76cf6c2c842944c6514c57df54d728f1916553
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/hci_sync.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "0a94f7e017438935c09ef833a1aa908ad9875213",
              "status": "affected",
              "version": "f00f36db76eb8fd10d13e80e2590f23b5beaa54d",
              "versionType": "git"
            },
            {
              "lessThan": "932c0a4f77ac13e526fdd5b42914d29c9821d389",
              "status": "affected",
              "version": "1499f79995c7ee58e3bfeeff75f6d1b37dcda881",
              "versionType": "git"
            },
            {
              "lessThan": "ae76cf6c2c842944c6514c57df54d728f1916553",
              "status": "affected",
              "version": "505ea2b295929e7be2b4e1bc86ee31cb7862fb01",
              "versionType": "git"
            },
            {
              "lessThan": "9cd536970192b72257afcdfba0bfc09993e6f19c",
              "status": "affected",
              "version": "505ea2b295929e7be2b4e1bc86ee31cb7862fb01",
              "versionType": "git"
            },
            {
              "lessThan": "09b0cd1297b4dbfe736aeaa0ceeab2265f47f772",
              "status": "affected",
              "version": "505ea2b295929e7be2b4e1bc86ee31cb7862fb01",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "357603f4d396d85fbf0045512efaf1d7f7394ed7",
              "versionType": "git"
            },
            {
              "lessThan": "6.1.159",
              "status": "affected",
              "version": "6.1.120",
              "versionType": "semver"
            },
            {
              "lessThan": "6.6.117",
              "status": "affected",
              "version": "6.6.51",
              "versionType": "semver"
            },
            {
              "lessThan": "6.9",
              "status": "affected",
              "version": "6.8.9",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/hci_sync.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.9"
            },
            {
              "lessThan": "6.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.159",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.117",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.58",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "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_sync: fix race in hci_cmd_sync_dequeue_once\n\nhci_cmd_sync_dequeue_once() does lookup and then cancel\nthe entry under two separate lock sections. Meanwhile,\nhci_cmd_sync_work() can also delete the same entry,\nleading to double list_del() and \"UAF\".\n\nFix this by holding cmd_sync_work_lock across both\nlookup and cancel, so that the entry cannot be removed\nconcurrently."
    }
  ],
  "id": "CVE-2025-40318",
  "lastModified": "2026-06-17T09:21:39.043",
  "metrics": {},
  "published": "2025-12-08T01:16:04.413",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/09b0cd1297b4dbfe736aeaa0ceeab2265f47f772"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0a94f7e017438935c09ef833a1aa908ad9875213"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/932c0a4f77ac13e526fdd5b42914d29c9821d389"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9cd536970192b72257afcdfba0bfc09993e6f19c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ae76cf6c2c842944c6514c57df54d728f1916553"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}


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