fkie_cve-2022-48816
Vulnerability from fkie_nvd
Published
2024-07-16 12:15
Modified
2025-10-06 17:07
Severity ?
4.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: SUNRPC: lock against ->sock changing during sysfs read ->sock can be set to NULL asynchronously unless ->recv_mutex is held. So it is important to hold that mutex. Otherwise a sysfs read can trigger an oops. Commit 17f09d3f619a ("SUNRPC: Check if the xprt is connected before handling sysfs reads") appears to attempt to fix this problem, but it only narrows the race window.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9482ab4540f5bcc869b44c067ae99b5fca16bd07Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b49ea673e119f59c71645e2f65b3ccad857c90eePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/9482ab4540f5bcc869b44c067ae99b5fca16bd07Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b49ea673e119f59c71645e2f65b3ccad857c90eePatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 5.17
linux linux_kernel 5.17
linux linux_kernel 5.17


To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nSUNRPC: lock against -\u003esock changing during sysfs read\n\n-\u003esock can be set to NULL asynchronously unless -\u003erecv_mutex is held.\nSo it is important to hold that mutex.  Otherwise a sysfs read can\ntrigger an oops.\nCommit 17f09d3f619a (\"SUNRPC: Check if the xprt is connected before\nhandling sysfs reads\") appears to attempt to fix this problem, but it\nonly narrows the race window."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: SUNRPC: bloqueo contra -\u0026gt;cambio de calcet\u00edn durante la lectura de sysfs -\u0026gt;sock se puede establecer en NULL de forma asincr\u00f3nica a menos que se mantenga -\u0026gt;recv_mutex. Por eso es importante mantener ese mutex. De lo contrario, una lectura de sysfs puede provocar un error. El commit 17f09d3f619a (\"SUNRPC: compruebe si el xprt est\u00e1 conectado antes de manejar las lecturas sysfs\") parece intentar solucionar este problema, pero solo reduce la ventana de ejecuci\u00f3n."
    }
  ],
  "id": "CVE-2022-48816",
  "lastModified": "2025-10-06T17:07:26.410",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 4.7,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.0,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
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  "published": "2024-07-16T12:15:05.687",
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  "vulnStatus": "Analyzed",
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          "value": "CWE-476"
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      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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