CVE-2025-37962 (GCVE-0-2025-37962)
Vulnerability from cvelistv5
Published
2025-05-20 16:01
Modified
2025-05-26 05:24
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix memory leak in parse_lease_state() The previous patch that added bounds check for create lease context introduced a memory leak. When the bounds check fails, the function returns NULL without freeing the previously allocated lease_ctx_info structure. This patch fixes the issue by adding kfree(lreq) before returning NULL in both boundary check cases.
References
Impacted products
Vendor Product Version
Linux Linux Version: 629dd37acc336ad778979361c351e782053ea284
Version: 60b7207893a8a06c78441934931a08fdad63f18e
Version: 800c482c9ef5910f05e3a713943c67cc6c1d4939
Version: 9a1b6ea955e6c7b29939a6d98701202f9d9644ec
Version: bab703ed8472aa9d109c5f8c1863921533363dae
Version: a41cd52f00907a040ca22c73d4805bb79b0d0972
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   Linux Linux Version: 6.1.134   ≤
Version: 6.6.87   ≤
Version: 6.12.23   ≤
Version: 6.14.2   ≤
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix memory leak in parse_lease_state()\n\nThe previous patch that added bounds check for create lease context\nintroduced a memory leak. When the bounds check fails, the function\nreturns NULL without freeing the previously allocated lease_ctx_info\nstructure.\n\nThis patch fixes the issue by adding kfree(lreq) before returning NULL\nin both boundary check cases."
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      "providerMetadata": {
        "dateUpdated": "2025-05-26T05:24:39.073Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
        {
          "url": "https://git.kernel.org/stable/c/eb4447bcce915b43b691123118893fca4f372a8f"
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      "title": "ksmbd: fix memory leak in parse_lease_state()",
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    "cveId": "CVE-2025-37962",
    "datePublished": "2025-05-20T16:01:54.612Z",
    "dateReserved": "2025-04-16T04:51:23.974Z",
    "dateUpdated": "2025-05-26T05:24:39.073Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-37962\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-05-20T16:15:34.473\",\"lastModified\":\"2025-05-21T20:24:58.133\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nksmbd: fix memory leak in parse_lease_state()\\n\\nThe previous patch that added bounds check for create lease context\\nintroduced a memory leak. When the bounds check fails, the function\\nreturns NULL without freeing the previously allocated lease_ctx_info\\nstructure.\\n\\nThis patch fixes the issue by adding kfree(lreq) before returning NULL\\nin both boundary check cases.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ksmbd: correcci\u00f3n de fuga de memoria en parse_lease_state(). El parche anterior, que a\u00f1ad\u00eda la comprobaci\u00f3n de los l\u00edmites para el contexto de creaci\u00f3n de arrendamiento, introduc\u00eda una fuga de memoria. Cuando la comprobaci\u00f3n de los l\u00edmites falla, la funci\u00f3n devuelve NULL sin liberar la estructura lease_ctx_info previamente asignada. Este parche corrige el problema a\u00f1adiendo kfree(lreq) antes de devolver NULL en ambos casos de comprobaci\u00f3n de los l\u00edmites.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2148d34371b06dac696c0497a98a6bf905a51650\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/829e19ef741d9e9932abdc3bee5466195e0852cf\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/af9e2d4732a548db8f6f5a90c2c20a789a3d7240\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/eb4447bcce915b43b691123118893fca4f372a8f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/facf22c1a394c1e023dab5daf9a494f722771e1c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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