GHSA-RF7J-4MGX-52C3

Vulnerability from github – Published: 2026-06-24 09:30 – Updated: 2026-06-28 09:31
VLAI
Details

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: serialize accept_q access

bt_sock_poll() walks the accept queue without synchronization, while child teardown can unlink the same socket and drop its last reference. The unsynchronized accept queue walk has existed since the initial Bluetooth import.

Protect accept_q with a dedicated lock for queue updates and polling. Also rework bt_accept_dequeue() to take temporary child references under the queue lock before dropping it and locking the child socket.

Severity
8.8 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2026-52918"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-24T08:16:21Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: serialize accept_q access\n\nbt_sock_poll() walks the accept queue without synchronization, while\nchild teardown can unlink the same socket and drop its last reference.\nThe unsynchronized accept queue walk has existed since the initial\nBluetooth import.\n\nProtect accept_q with a dedicated lock for queue updates and polling.\nAlso rework bt_accept_dequeue() to take temporary child references under\nthe queue lock before dropping it and locking the child socket.",
  "id": "GHSA-rf7j-4mgx-52c3",
  "modified": "2026-06-28T09:31:36Z",
  "published": "2026-06-24T09:30:48Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-52918"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/41c8c1c7923e86e0eb59cfb4279349112756a336"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4ec17782fd186f901a7329605d11048b085b945a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/85f8674cae82053f1e6bab295f6a8422cca14db5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8b4c412e001b0c670eb937beab491af974da55b3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a218bf69eb51fefe59a3976fa8925261141f681c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/be43e6b4043113c3b3cf887c3c8350f67140274c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d9ce4de05df2385c19e2c7d12f529144e1a44af1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e83f5e24da741fa9405aeeff00b08c5ee7c37b88"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.