ghsa-fv7f-r8h4-5hh2
Vulnerability from github
Published
2025-07-03 09:30
Modified
2025-07-03 09:30
Details

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

net: cadence: macb: Fix a possible deadlock in macb_halt_tx.

There is a situation where after THALT is set high, TGO stays high as well. Because jiffies are never updated, as we are in a context with interrupts disabled, we never exit that loop and have a deadlock.

That deadlock was noticed on a sama5d4 device that stayed locked for days.

Use retries instead of jiffies so that the timeout really works and we do not have a deadlock anymore.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-38094"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-03T08:15:25Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: cadence: macb: Fix a possible deadlock in macb_halt_tx.\n\nThere is a situation where after THALT is set high, TGO stays high as\nwell. Because jiffies are never updated, as we are in a context with\ninterrupts disabled, we never exit that loop and have a deadlock.\n\nThat deadlock was noticed on a sama5d4 device that stayed locked for days.\n\nUse retries instead of jiffies so that the timeout really works and we do\nnot have a deadlock anymore.",
  "id": "GHSA-fv7f-r8h4-5hh2",
  "modified": "2025-07-03T09:30:32Z",
  "published": "2025-07-03T09:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38094"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0772a608d799ac0d127c0a36047a2725777aba9d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1d60c0781c1bbeaa1196b0d8aad5c435f06cb7c4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3e64d35475aa21d13dab71da51de51923c1a3a48"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/64675a9c00443b2e8af42af08c38fc1b78b68ba2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/84f98955a9de0e0f591df85aa1a44f3ebcf1cb37"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aace6b63892ce8307e502a60fe2f5a4bc6e1cfe7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c92d6089d8ad7d4d815ebcedee3f3907b539ff1f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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