fkie_cve-2022-48630
Vulnerability from fkie_nvd
Published
2024-03-05 12:15
Modified
2025-02-03 14:09
Severity ?
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: crypto: qcom-rng - fix infinite loop on requests not multiple of WORD_SZ The commit referenced in the Fixes tag removed the 'break' from the else branch in qcom_rng_read(), causing an infinite loop whenever 'max' is not a multiple of WORD_SZ. This can be reproduced e.g. by running: kcapi-rng -b 67 >/dev/null There are many ways to fix this without adding back the 'break', but they all seem more awkward than simply adding it back, so do just that. Tested on a machine with Qualcomm Amberwing processor.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/05d4d17475d8d094c519bb51658bc47899c175e3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/16287397ec5c08aa58db6acf7dbc55470d78087dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/233a3cc60e7a8fe0be8cf9934ae7b67ba25a866cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/71a89789552b7faf3ef27969b9bc783fa0df3550Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8a06f25f5941c145773204f2f7abef95b4ffb8cePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8be06f62b426801dba43ddf8893952a0e62ab6aePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/05d4d17475d8d094c519bb51658bc47899c175e3Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/16287397ec5c08aa58db6acf7dbc55470d78087dPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/233a3cc60e7a8fe0be8cf9934ae7b67ba25a866cPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/71a89789552b7faf3ef27969b9bc783fa0df3550Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8a06f25f5941c145773204f2f7abef95b4ffb8cePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8be06f62b426801dba43ddf8893952a0e62ab6aePatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 5.18
linux linux_kernel 5.18
linux linux_kernel 5.18
linux linux_kernel 5.18
linux linux_kernel 5.18
linux linux_kernel 5.18
linux linux_kernel 5.18
linux linux_kernel 5.18


To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: qcom-rng - fix infinite loop on requests not multiple of WORD_SZ\n\nThe commit referenced in the Fixes tag removed the \u0027break\u0027 from the else\nbranch in qcom_rng_read(), causing an infinite loop whenever \u0027max\u0027 is\nnot a multiple of WORD_SZ. This can be reproduced e.g. by running:\n\n    kcapi-rng -b 67 \u003e/dev/null\n\nThere are many ways to fix this without adding back the \u0027break\u0027, but\nthey all seem more awkward than simply adding it back, so do just that.\n\nTested on a machine with Qualcomm Amberwing processor."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: crypto: qcom-rng: corrige el bucle infinito en solicitudes que no sean m\u00faltiples de WORD_SZ. El commit a la que se hace referencia en la etiqueta Fixes elimin\u00f3 la \u0027ruptura\u0027 de la rama else en qcom_rng_read(), lo que provoc\u00f3 una bucle infinito siempre que \u0027max\u0027 no sea un m\u00faltiplo de WORD_SZ. Esto se puede reproducir, por ejemplo, ejecutando: kcapi-rng -b 67 \u0026gt;/dev/null Hay muchas formas de solucionar este problema sin volver a agregar el \u0027descanso\u0027, pero todas parecen m\u00e1s inc\u00f3modas que simplemente volver a agregarlo, as\u00ed que hazlo. Probado en una m\u00e1quina con procesador Qualcomm Amberwing."
    }
  ],
  "id": "CVE-2022-48630",
  "lastModified": "2025-02-03T14:09:55.317",
  "metrics": {
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          "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"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2024-03-05T12:15:45.780",
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          "lang": "en",
          "value": "CWE-835"
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      "source": "nvd@nist.gov",
      "type": "Primary"
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}


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