FKIE_CVE-2021-47320
Vulnerability from fkie_nvd - Published: 2024-05-21 15:15 - Updated: 2026-06-17 04:17
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved:
nfs: fix acl memory leak of posix_acl_create()
When looking into another nfs xfstests report, I found acl and
default_acl in nfs3_proc_create() and nfs3_proc_mknod() error
paths are possibly leaked. Fix them in advance.
References
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 | * |
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/nfs/nfs3proc.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "2e3960f276b4574a9bb0dfa31a7497302f6363b2",
"status": "affected",
"version": "013cdf1088d7235da9477a2375654921d9b9ba9f",
"versionType": "git"
},
{
"lessThan": "cef9d9acb7c80ed6bace894b6334557fd493863b",
"status": "affected",
"version": "013cdf1088d7235da9477a2375654921d9b9ba9f",
"versionType": "git"
},
{
"lessThan": "8a2b308a54c5ec224fedc753617f99b29ffcd883",
"status": "affected",
"version": "013cdf1088d7235da9477a2375654921d9b9ba9f",
"versionType": "git"
},
{
"lessThan": "0704f617040c397ae73c1f88f3956787ec5d6529",
"status": "affected",
"version": "013cdf1088d7235da9477a2375654921d9b9ba9f",
"versionType": "git"
},
{
"lessThan": "d0b32dc1409f7e65e4fcc34e236462268e69a357",
"status": "affected",
"version": "013cdf1088d7235da9477a2375654921d9b9ba9f",
"versionType": "git"
},
{
"lessThan": "4b515308ab875c7e8ada8e606fe0c64762da5ed4",
"status": "affected",
"version": "013cdf1088d7235da9477a2375654921d9b9ba9f",
"versionType": "git"
},
{
"lessThan": "c8fc86e9df6a6a03f5a8e15a3b7a5c75fd05aa38",
"status": "affected",
"version": "013cdf1088d7235da9477a2375654921d9b9ba9f",
"versionType": "git"
},
{
"lessThan": "687cf32865b2d6960214bce523f2afac58dd3cd2",
"status": "affected",
"version": "013cdf1088d7235da9477a2375654921d9b9ba9f",
"versionType": "git"
},
{
"lessThan": "1fcb6fcd74a222d9ead54d405842fc763bb86262",
"status": "affected",
"version": "013cdf1088d7235da9477a2375654921d9b9ba9f",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"fs/nfs/nfs3proc.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "3.14"
},
{
"lessThan": "3.14",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.4.*",
"status": "unaffected",
"version": "4.4.276",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.9.*",
"status": "unaffected",
"version": "4.9.276",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.14.*",
"status": "unaffected",
"version": "4.14.240",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"version": "4.19.198",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.134",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.52",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.12.*",
"status": "unaffected",
"version": "5.12.19",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.13.*",
"status": "unaffected",
"version": "5.13.4",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "5.14",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"configurations": [
{
"nodes": [
{
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"matchCriteriaId": "8A405F5C-A3EA-404F-B063-4D28AD47BC3D",
"versionEndExcluding": "4.4.276",
"versionStartIncluding": "3.14",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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},
{
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],
"negate": false,
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]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfs: fix acl memory leak of posix_acl_create()\n\nWhen looking into another nfs xfstests report, I found acl and\ndefault_acl in nfs3_proc_create() and nfs3_proc_mknod() error\npaths are possibly leaked. Fix them in advance."
},
{
"lang": "es",
"value": " En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: nfs: corrige la p\u00e9rdida de memoria acl de posix_acl_create(). Al buscar en otro informe de nfs xfstests, encontr\u00e9 que acl y default_acl en nfs3_proc_create() y las rutas de error de nfs3_proc_mknod() posiblemente se hayan filtrado. Arr\u00e9glelos con anticipaci\u00f3n."
}
],
"id": "CVE-2021-47320",
"lastModified": "2026-06-17T04:17:11.237",
"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"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2021-47320",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-05-23T18:03:03.158182Z",
"version": "2.0.3"
}
}
]
},
"published": "2024-05-21T15:15:19.220",
"references": [
{
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"tags": [
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],
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-401"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
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.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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