CVE-2025-38094 (GCVE-0-2025-38094)
Vulnerability from cvelistv5
Published
2025-07-03 07:44
Modified
2025-07-03 07:44
Severity ?
Summary
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: e86cd53afc5907f7c221b709916e2dd354e14691
Version: e86cd53afc5907f7c221b709916e2dd354e14691
Version: e86cd53afc5907f7c221b709916e2dd354e14691
Version: e86cd53afc5907f7c221b709916e2dd354e14691
Version: e86cd53afc5907f7c221b709916e2dd354e14691
Version: e86cd53afc5907f7c221b709916e2dd354e14691
Version: e86cd53afc5907f7c221b709916e2dd354e14691
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{
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/cadence/macb_main.c"
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      ],
      "cpeApplicability": [
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          "value": "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-03T07:44:17.442Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/0772a608d799ac0d127c0a36047a2725777aba9d"
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          "url": "https://git.kernel.org/stable/c/c92d6089d8ad7d4d815ebcedee3f3907b539ff1f"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38094",
    "datePublished": "2025-07-03T07:44:17.442Z",
    "dateReserved": "2025-04-16T04:51:23.984Z",
    "dateUpdated": "2025-07-03T07:44:17.442Z",
    "state": "PUBLISHED"
  },
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  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38094\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-07-03T08:15:25.490\",\"lastModified\":\"2025-07-03T15:13:53.147\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: cadence: macb: Se corrige un posible interbloqueo en macb_halt_tx. Existe una situaci\u00f3n en la que, tras establecerse un valor alto en THALT, TGO tambi\u00e9n permanece alto. Dado que los jiffies nunca se actualizan, al estar en un contexto con las interrupciones deshabilitadas, nunca salimos de ese bucle y se produce un interbloqueo. Este interbloqueo se detect\u00f3 en un dispositivo sama5d4 que permaneci\u00f3 bloqueado durante d\u00edas. Se recomienda usar reintentos en lugar de jiffies para que el tiempo de espera funcione correctamente y se elimine el interbloqueo.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0772a608d799ac0d127c0a36047a2725777aba9d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1d60c0781c1bbeaa1196b0d8aad5c435f06cb7c4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3e64d35475aa21d13dab71da51de51923c1a3a48\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/64675a9c00443b2e8af42af08c38fc1b78b68ba2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/84f98955a9de0e0f591df85aa1a44f3ebcf1cb37\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/aace6b63892ce8307e502a60fe2f5a4bc6e1cfe7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c92d6089d8ad7d4d815ebcedee3f3907b539ff1f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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