CVE-2021-4083
Estado: ModificadaAlta (7)—
A read-after-free memory flaw was found in the Linux kernel's garbage collection for Unix domain socket file handlers in the way users call close() and fget() simultaneously and can potentially trigger a race condition. This flaw allows a local user to crash the system or escalate their privileges on the system. This flaw affects Linux kernel versions prior to 5.16-rc4.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 7
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.31%
- Percentil entre todas las CVEs puntuadas: 22
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (15)
Debian — Debian LinuxLinux — Linux KernelNetapp — H300e FirmwareNetapp — H300s FirmwareNetapp — H410c FirmwareNetapp — H410s FirmwareNetapp — H500e FirmwareNetapp — H500s FirmwareNetapp — H700e FirmwareNetapp — H700s FirmwareNetapp — HCI Management NodeNetapp — SolidfireOracle — Communications Cloud Native Core Binding Support FunctionOracle — Communications Cloud Native Core Network Exposure FunctionOracle — Communications Cloud Native Core Policy
CWE
- CWE-416
- CWE-362
Referencias
- https://bugzilla.redhat.com/show_bug.cgi?id=2029923
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=054aa8d439b9
- https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
- https://security.netapp.com/advisory/ntap-20220217-0005/
- https://www.debian.org/security/2022/dsa-5096
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://bugzilla.redhat.com/show_bug.cgi?id=2029923
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=054aa8d439b9
- https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
- https://security.netapp.com/advisory/ntap-20220217-0005/
- https://www.debian.org/security/2022/dsa-5096
- https://www.oracle.com/security-alerts/cpujul2022.html
JSON original (NVD)
Mostrar
{
"id": "CVE-2021-4083",
"cveTags": [],
"metrics": {
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 6.9,
"accessVector": "LOCAL",
"vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C",
"authentication": "NONE",
"integrityImpact": "COMPLETE",
"accessComplexity": "MEDIUM",
"availabilityImpact": "COMPLETE",
"confidentialityImpact": "COMPLETE"
},
"acInsufInfo": false,
"impactScore": 10,
"baseSeverity": "MEDIUM",
"obtainAllPrivilege": false,
"exploitabilityScore": 3.4,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7,
"attackVector": "LOCAL",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "HIGH",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 1
}
]
},
"affected": [
{
"source": "secalert@redhat.com",
"affectedData": [
{
"vendor": "n/a",
"product": "kernel",
"versions": [
{
"status": "affected",
"version": "kernel 5.16-rc4"
}
]
}
]
}
],
"published": "2022-01-18T17:15:09.403",
"references": [
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2029923",
"tags": [
"Issue Tracking",
"Patch",
"Third Party Advisory"
],
"source": "secalert@redhat.com"
},
{
"url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=054aa8d439b9",
"tags": [
"Mailing List",
"Patch"
],
"source": "secalert@redhat.com"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"source": "secalert@redhat.com"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"source": "secalert@redhat.com"
},
{
"url": "https://security.netapp.com/advisory/ntap-20220217-0005/",
"tags": [
"Third Party Advisory"
],
"source": "secalert@redhat.com"
},
{
"url": "https://www.debian.org/security/2022/dsa-5096",
"tags": [
"Third Party Advisory"
],
"source": "secalert@redhat.com"
},
{
"url": "https://www.oracle.com/security-alerts/cpujul2022.html",
"tags": [
"Patch",
"Third Party Advisory"
],
"source": "secalert@redhat.com"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2029923",
"tags": [
"Issue Tracking",
"Patch",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=054aa8d439b9",
"tags": [
"Mailing List",
"Patch"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://security.netapp.com/advisory/ntap-20220217-0005/",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://www.debian.org/security/2022/dsa-5096",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://www.oracle.com/security-alerts/cpujul2022.html",
"tags": [
"Patch",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Secondary",
"source": "secalert@redhat.com",
"description": [
{
"lang": "en",
"value": "CWE-416"
}
]
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-362"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A read-after-free memory flaw was found in the Linux kernel's garbage collection for Unix domain socket file handlers in the way users call close() and fget() simultaneously and can potentially trigger a race condition. This flaw allows a local user to crash the system or escalate their privileges on the system. This flaw affects Linux kernel versions prior to 5.16-rc4."
},
{
"lang": "es",
"value": "Se ha encontrado un fallo de lectura de memoria previamente liberada en la recolección de basura del kernel de Linux para los manejadores de archivos de socket de dominio Unix en la forma en que los usuarios llaman a close() y fget() simultáneamente y puede potencialmente desencadenar una condición de carrera. Este fallo permite a un usuario local bloquear el sistema o escalar sus privilegios en el sistema. Este fallo afecta a las versiones del kernel de Linux anteriores a la 5.16-rc4"
}
],
"lastModified": "2026-06-17T04:19:00.623",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D8453AEE-C6A3-45F8-875D-63F8D19E16F8",
"versionEndExcluding": "4.4.294"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "DB7F6C04-42D3-48A3-892D-2487383B9B6E",
"versionEndExcluding": "4.9.292",
"versionStartIncluding": "4.5"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "7080D941-9847-42F5-BA50-0A03CFB61FD1",
"versionEndExcluding": "4.14.257",
"versionStartIncluding": "4.10"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "FFE5D9F3-CF1C-4DE8-9116-2EBE7BDEF7FD",
"versionEndExcluding": "4.19.220",
"versionStartIncluding": "4.15"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D2D8DC10-1823-4334-BD0F-C1B620602FF9",
"versionEndExcluding": "5.4.164",
"versionStartIncluding": "4.20"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "26973DED-ABFE-45EA-98B6-628224CBB724",
"versionEndExcluding": "5.10.84",
"versionStartIncluding": "5.5.0"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A696A60B-2782-4119-83DD-1EFFBC903F02",
"versionEndExcluding": "5.15.7",
"versionStartIncluding": "5.11"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:5.16:rc1:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "357AA433-37E8-4323-BFB2-3038D6E4B414"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:5.16:rc2:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A73429BA-C2D9-4D0C-A75F-06A1CA8B3983"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:5.16:rc3:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F621B5E3-E99D-49E7-90B9-EC3B77C95383"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "234DEFE0-5CE5-4B0A-96B8-5D227CB8ED31"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "CDDF61B7-EC5C-467C-B710-B89F502CD04F"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "6770B6C3-732E-4E22-BF1C-2D2FD610061C"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "9F9C8C20-42EB-4AB5-BD97-212DEB070C43"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "7FFF7106-ED78-49BA-9EC5-B889E3685D53"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "E63D8B0F-006E-4801-BF9D-1C001BBFB4F9"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "56409CEC-5A1E-4450-AA42-641E459CC2AF"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "B06F4839-D16A-4A61-9BB5-55B13F41E47F"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "108A2215-50FB-4074-94CF-C130FA14566D"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "7AFC73CE-ABB9-42D3-9A71-3F5BC5381E0E"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "32F0B6C0-F930-480D-962B-3F4EFDCC13C7"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netapp:h500e:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "803BC414-B250-4E3A-A478-A3881340D6B8"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "0FEB3337-BFDE-462A-908B-176F92053CEC"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netapp:h700e:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "736AEAE9-782B-4F71-9893-DED53367E102"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D0B4AD8A-F172-4558-AEC6-FF424BA2D912"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "8497A4C9-8474-4A62-8331-3FE862ED4098"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252"
},
{
"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A3C19813-E823-456A-B1CE-EC0684CE1953"
},
{
"criteria": "cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A6E9EF0C-AFA8-4F7B-9FDC-1E0F7C26E737"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:22.1.3:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "6EDB6772-7FDB-45FF-8D72-952902A7EE56"
},
{
"criteria": "cpe:2.3:a:oracle:communications_cloud_native_core_network_exposure_function:22.1.1:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "9955F62A-75D3-4347-9AD3-5947FC365838"
},
{
"criteria": "cpe:2.3:a:oracle:communications_cloud_native_core_policy:22.2.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "7A6D77C7-A2F4-4700-AB5A-3EC853496ECA"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "secalert@redhat.com"
}