GHSA-W4QG-4V2Q-4R8F

Vulnerability from github – Published: 2026-08-10 15:33 – Updated: 2026-08-19 18:32
VLAI
Details

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

dpaa2-switch: put MAC endpoint device on disconnect

fsl_mc_get_endpoint() returns the MAC endpoint device with a reference taken through device_find_child(). The switch port connect path stores that device in mac->mc_dev and keeps it for the lifetime of the connected MAC object.

However, the disconnect path only closes the MAC and frees the dpaa2_mac object. It does not drop the endpoint device reference stored in mac->mc_dev, so every successful connect leaks that device reference when the MAC is later disconnected.

Drop the endpoint device reference before freeing the dpaa2_mac object.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-68333"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-10T13:20:23Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndpaa2-switch: put MAC endpoint device on disconnect\n\nfsl_mc_get_endpoint() returns the MAC endpoint device with a reference\ntaken through device_find_child(). The switch port connect path stores\nthat device in mac-\u003emc_dev and keeps it for the lifetime of the connected\nMAC object.\n\nHowever, the disconnect path only closes the MAC and frees the dpaa2_mac\nobject. It does not drop the endpoint device reference stored in\nmac-\u003emc_dev, so every successful connect leaks that device reference when\nthe MAC is later disconnected.\n\nDrop the endpoint device reference before freeing the dpaa2_mac object.",
  "id": "GHSA-w4qg-4v2q-4r8f",
  "modified": "2026-08-19T18:32:15Z",
  "published": "2026-08-10T15:33:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68333"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0e9a6811eb6198ab17538cd01fa155d133b238ed"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/196f7301537814bef0f5915f87cd73d6d1235c19"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1f4ca61b7a93de3dfa5161bcd38ecb99bb091c38"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/26ac2d3602347f0377fbcd5214bc28a9d735ae68"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4c1eabbef7a1707635652e956e39db1269c3af2b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/680eecc850d36a280df9780496bc603fec17b2d6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c27694ff6748e08fcd2fdba89018439d75b8198f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}



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