GHSA-JG7R-P8W6-9PMQ

Vulnerability from github – Published: 2026-07-19 18:31 – Updated: 2026-07-19 18:31
VLAI
Details

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

Bluetooth: L2CAP: fix chan ref leak in l2cap_chan_timeout() on !conn

__set_chan_timer() takes a l2cap_chan reference via l2cap_chan_hold() before scheduling the delayed work. The normal path in l2cap_chan_timeout() drops this reference with l2cap_chan_put() at the end, but the early return when chan->conn is NULL skips the put, leaking the reference.

Add the missing l2cap_chan_put() before the early return.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-63948"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-19T16:17:13Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: fix chan ref leak in l2cap_chan_timeout() on !conn\n\n__set_chan_timer() takes a l2cap_chan reference via l2cap_chan_hold()\nbefore scheduling the delayed work.  The normal path in\nl2cap_chan_timeout() drops this reference with l2cap_chan_put() at the\nend, but the early return when chan-\u003econn is NULL skips the put,\nleaking the reference.\n\nAdd the missing l2cap_chan_put() before the early return.",
  "id": "GHSA-jg7r-p8w6-9pmq",
  "modified": "2026-07-19T18:31:47Z",
  "published": "2026-07-19T18:31:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63948"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/08d81fe96f80a8e20c7acb573b6a45d901fcf2cd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/107c826e4ef9ec5ad8f60e6fe64d8d5325ba508f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/50f1bcaaaa3a80bb1c3472044bc146e8d49d51ee"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/63cd225cc13d782a85e2a73c04d0d350153eada1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8894c2010435a56ce7c6c2a8785860c13554df2f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9dbd84990394c51f5cee1e8871bb5ff8af5ed939"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b5c59a5b469e2a809a2d57eda4ded94235971060"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e8a5baff5be273ca07771fd2b9bb1f2a4152917b"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}



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