fkie_cve-2022-49103
Vulnerability from fkie_nvd
Published
2025-02-26 07:00
Modified
2025-10-01 20:15
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: NFSv4.2: fix reference count leaks in _nfs42_proc_copy_notify() [You don't often get email from xiongx18@fudan.edu.cn. Learn why this is important at http://aka.ms/LearnAboutSenderIdentification.] The reference counting issue happens in two error paths in the function _nfs42_proc_copy_notify(). In both error paths, the function simply returns the error code and forgets to balance the refcount of object `ctx`, bumped by get_nfs_open_context() earlier, which may cause refcount leaks. Fix it by balancing refcount of the `ctx` object before the function returns in both error paths.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9b9feec97c1fc7dd9bb69f62c4905cddf1801599Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b37f482ba9f0e6382c188e3fccf6c4b2fdc938ebPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b7f114edd54326f730a754547e7cfb197b5bc132Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f46f632f9cfae4b2e3635fa58840a8ec584c42e3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fb73bf6305f4eb8f0cf9a61ee874d55f019d6dc4Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *


To clipboard 

{
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    {
      "nodes": [
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSv4.2: fix reference count leaks in _nfs42_proc_copy_notify()\n\n[You don\u0027t often get email from xiongx18@fudan.edu.cn. Learn why this is important at http://aka.ms/LearnAboutSenderIdentification.]\n\nThe reference counting issue happens in two error paths in the\nfunction _nfs42_proc_copy_notify(). In both error paths, the function\nsimply returns the error code and forgets to balance the refcount of\nobject `ctx`, bumped by get_nfs_open_context() earlier, which may\ncause refcount leaks.\n\nFix it by balancing refcount of the `ctx` object before the function\nreturns in both error paths."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: NFSv4.2: se corrigen las fugas de recuento de referencias en _nfs42_proc_copy_notify() [No suele recibir correos electr\u00f3nicos de xiongx18@fudan.edu.cn. Descubra por qu\u00e9 esto es importante en http://aka.ms/LearnAboutSenderIdentification.] El problema del recuento de referencias ocurre en dos rutas de error en la funci\u00f3n _nfs42_proc_copy_notify(). En ambas rutas de error, la funci\u00f3n simplemente devuelve el c\u00f3digo de error y se olvida de equilibrar el recuento de referencias del objeto `ctx`, que se elev\u00f3 anteriormente mediante get_nfs_open_context(), lo que puede provocar fugas de recuento de referencias. Arr\u00e9glelo equilibrando el recuento de referencias del objeto `ctx` antes de que la funci\u00f3n regrese en ambas rutas de error."
    }
  ],
  "id": "CVE-2022-49103",
  "lastModified": "2025-10-01T20:15:46.340",
  "metrics": {
    "cvssMetricV31": [
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
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        "impactScore": 3.6,
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          "confidentialityImpact": "NONE",
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          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
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  "published": "2025-02-26T07:00:47.723",
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
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          "lang": "en",
          "value": "NVD-CWE-Other"
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      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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