FKIE_CVE-2021-47086

Vulnerability from fkie_nvd - Published: 2024-03-04 18:15 - Updated: 2025-01-16 17:13
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: phonet/pep: refuse to enable an unbound pipe This ioctl() implicitly assumed that the socket was already bound to a valid local socket name, i.e. Phonet object. If the socket was not bound, two separate problems would occur: 1) We'd send an pipe enablement request with an invalid source object. 2) Later socket calls could BUG on the socket unexpectedly being connected yet not bound to a valid object.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0bbdd62ce9d44f3a22059b3d20a0df977d9f6d59Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/311601f114859d586d5ef8833d60d3aa23282161Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/48c76fc53582e7f13c1e0b11c916e503256c4d0bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/52ad5da8e316fa11e3a50b3f089aa63e4089bf52Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/53ccdc73eedaf0e922c45b569b797d2796fbaafaPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/75a2f31520095600f650597c0ac41f48b5ba0068Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/982b6ba1ce626ef87e5c29f26f2401897554f235Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b10c7d745615a092a50c2e03ce70446d2bec2acaPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/0bbdd62ce9d44f3a22059b3d20a0df977d9f6d59Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/311601f114859d586d5ef8833d60d3aa23282161Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/48c76fc53582e7f13c1e0b11c916e503256c4d0bPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/52ad5da8e316fa11e3a50b3f089aa63e4089bf52Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/53ccdc73eedaf0e922c45b569b797d2796fbaafaPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/75a2f31520095600f650597c0ac41f48b5ba0068Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/982b6ba1ce626ef87e5c29f26f2401897554f235Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b10c7d745615a092a50c2e03ce70446d2bec2acaPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 5.16
linux linux_kernel 5.16
linux linux_kernel 5.16
linux linux_kernel 5.16
linux linux_kernel 5.16
linux linux_kernel 5.16
To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nphonet/pep: refuse to enable an unbound pipe\n\nThis ioctl() implicitly assumed that the socket was already bound to\na valid local socket name, i.e. Phonet object. If the socket was not\nbound, two separate problems would occur:\n\n1) We\u0027d send an pipe enablement request with an invalid source object.\n2) Later socket calls could BUG on the socket unexpectedly being\n   connected yet not bound to a valid object."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: phonet/pep: se niega a habilitar una tuber\u00eda independiente. Este ioctl() supone impl\u00edcitamente que el socket ya estaba vinculado a un nombre de socket local v\u00e1lido, es decir, objeto Phonet. Si el socket no estuviera vinculado, se producir\u00edan dos problemas distintos: 1) Enviamos una solicitud de habilitaci\u00f3n de canalizaci\u00f3n con un objeto fuente no v\u00e1lido. 2) Las llamadas de socket posteriores podr\u00edan ERROR en el socket que se conecta inesperadamente pero no est\u00e1 vinculado a un objeto v\u00e1lido."
    }
  ],
  "id": "CVE-2021-47086",
  "lastModified": "2025-01-16T17:13:09.150",
  "metrics": {
    "cvssMetricV31": [
      {
        "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"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
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  "published": "2024-03-04T18:15:07.393",
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  "vulnStatus": "Analyzed",
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}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.