CVE-2021-47086 (GCVE-0-2021-47086)
Vulnerability from cvelistv5
Published
2024-03-04 18:06
Modified
2025-05-21 08:31
Severity ?
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-8c081fb06d67 https://git.kernel.org/stable/c/0bbdd62ce9d44f3a22059b3d20a0df977d9f6d59 Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/311601f114859d586d5ef8833d60d3aa23282161 Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/48c76fc53582e7f13c1e0b11c916e503256c4d0b Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/52ad5da8e316fa11e3a50b3f089aa63e4089bf52 Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/53ccdc73eedaf0e922c45b569b797d2796fbaafa Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/75a2f31520095600f650597c0ac41f48b5ba0068 Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/982b6ba1ce626ef87e5c29f26f2401897554f235 Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/b10c7d745615a092a50c2e03ce70446d2bec2aca Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/0bbdd62ce9d44f3a22059b3d20a0df977d9f6d59 Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/311601f114859d586d5ef8833d60d3aa23282161 Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/48c76fc53582e7f13c1e0b11c916e503256c4d0b Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/52ad5da8e316fa11e3a50b3f089aa63e4089bf52 Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/53ccdc73eedaf0e922c45b569b797d2796fbaafa Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/75a2f31520095600f650597c0ac41f48b5ba0068 Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/982b6ba1ce626ef87e5c29f26f2401897554f235 Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/b10c7d745615a092a50c2e03ce70446d2bec2aca Patch
Impacted products
Vendor Product Version
Linux Linux Version: bdb6e697b2a76c541960b86ab8fda88f3de1adf2
Version: bdb6e697b2a76c541960b86ab8fda88f3de1adf2
Version: bdb6e697b2a76c541960b86ab8fda88f3de1adf2
Version: bdb6e697b2a76c541960b86ab8fda88f3de1adf2
Version: bdb6e697b2a76c541960b86ab8fda88f3de1adf2
Version: bdb6e697b2a76c541960b86ab8fda88f3de1adf2
Version: bdb6e697b2a76c541960b86ab8fda88f3de1adf2
Version: bdb6e697b2a76c541960b86ab8fda88f3de1adf2
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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 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      "cveMetadata": "{\"cveId\": \"CVE-2021-47086\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-21T08:31:35.043Z\", \"dateReserved\": \"2024-02-29T22:33:44.299Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-03-04T18:06:12.239Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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