CVE-2021-47086 (GCVE-0-2021-47086)

Vulnerability from cvelistv5 – Published: 2024-03-04 18:06 – Updated: 2025-05-21 08:31
VLAI?
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: bdb6e697b2a76c541960b86ab8fda88f3de1adf2 , < 0bbdd62ce9d44f3a22059b3d20a0df977d9f6d59 (git)
Affected: bdb6e697b2a76c541960b86ab8fda88f3de1adf2 , < b10c7d745615a092a50c2e03ce70446d2bec2aca (git)
Affected: bdb6e697b2a76c541960b86ab8fda88f3de1adf2 , < 311601f114859d586d5ef8833d60d3aa23282161 (git)
Affected: bdb6e697b2a76c541960b86ab8fda88f3de1adf2 , < 982b6ba1ce626ef87e5c29f26f2401897554f235 (git)
Affected: bdb6e697b2a76c541960b86ab8fda88f3de1adf2 , < 48c76fc53582e7f13c1e0b11c916e503256c4d0b (git)
Affected: bdb6e697b2a76c541960b86ab8fda88f3de1adf2 , < 52ad5da8e316fa11e3a50b3f089aa63e4089bf52 (git)
Affected: bdb6e697b2a76c541960b86ab8fda88f3de1adf2 , < 53ccdc73eedaf0e922c45b569b797d2796fbaafa (git)
Affected: bdb6e697b2a76c541960b86ab8fda88f3de1adf2 , < 75a2f31520095600f650597c0ac41f48b5ba0068 (git)
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    Linux Linux Affected: 3.3
Unaffected: 0 , < 3.3 (semver)
Unaffected: 4.4.297 , ≤ 4.4.* (semver)
Unaffected: 4.9.295 , ≤ 4.9.* (semver)
Unaffected: 4.14.260 , ≤ 4.14.* (semver)
Unaffected: 4.19.223 , ≤ 4.19.* (semver)
Unaffected: 5.4.169 , ≤ 5.4.* (semver)
Unaffected: 5.10.89 , ≤ 5.10.* (semver)
Unaffected: 5.15.12 , ≤ 5.15.* (semver)
Unaffected: 5.16 , ≤ * (original_commit_for_fix)
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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.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.4.297\", \"versionStartIncluding\": \"3.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.9.295\", \"versionStartIncluding\": \"3.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.14.260\", \"versionStartIncluding\": \"3.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.223\", \"versionStartIncluding\": \"3.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.169\", \"versionStartIncluding\": \"3.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.89\", \"versionStartIncluding\": \"3.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.12\", \"versionStartIncluding\": \"3.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.16\", \"versionStartIncluding\": \"3.3\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-21T08:31:35.043Z\"}}}",
      "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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Sightings

Author Source Type Date

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.