FKIE_CVE-2021-47571
Vulnerability from fkie_nvd - Published: 2024-05-24 15:15 - Updated: 2026-06-17 04:17
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved:
staging: rtl8192e: Fix use after free in _rtl92e_pci_disconnect()
The free_rtllib() function frees the "dev" pointer so there is use
after free on the next line. Re-arrange things to avoid that.
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 | * |
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/staging/rtl8192e/rtl8192e/rtl_core.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "d43aecb694b10db9a4228ce2d38b5ae8de374443",
"status": "affected",
"version": "66898177e7e5486dc77a4ba742efa4e2e9e900a4",
"versionType": "git"
},
{
"lessThan": "9186680382934b0e7529d3d70dcc0a21d087683b",
"status": "affected",
"version": "66898177e7e5486dc77a4ba742efa4e2e9e900a4",
"versionType": "git"
},
{
"lessThan": "c0ef0e75a858cbd8618b473f22fbca36106dcf82",
"status": "affected",
"version": "66898177e7e5486dc77a4ba742efa4e2e9e900a4",
"versionType": "git"
},
{
"lessThan": "bca19bb2dc2d89ce60c4a4a6e59609d4cf2e13ef",
"status": "affected",
"version": "66898177e7e5486dc77a4ba742efa4e2e9e900a4",
"versionType": "git"
},
{
"lessThan": "2e1ec01af2c7139c6a600bbfaea1a018b35094b6",
"status": "affected",
"version": "66898177e7e5486dc77a4ba742efa4e2e9e900a4",
"versionType": "git"
},
{
"lessThan": "8d0163cec7de995f9eb9c3128c83fb84f0cb1c64",
"status": "affected",
"version": "66898177e7e5486dc77a4ba742efa4e2e9e900a4",
"versionType": "git"
},
{
"lessThan": "e27ee2f607fe6a9b923ef1fc65461c0613c97594",
"status": "affected",
"version": "66898177e7e5486dc77a4ba742efa4e2e9e900a4",
"versionType": "git"
},
{
"lessThan": "b535917c51acc97fb0761b1edec85f1f3d02bda4",
"status": "affected",
"version": "66898177e7e5486dc77a4ba742efa4e2e9e900a4",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/staging/rtl8192e/rtl8192e/rtl_core.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "3.2"
},
{
"lessThan": "3.2",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.4.*",
"status": "unaffected",
"version": "4.4.294",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.9.*",
"status": "unaffected",
"version": "4.9.292",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.14.*",
"status": "unaffected",
"version": "4.14.257",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"version": "4.19.219",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.163",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.83",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.6",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "5.16",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "C0203844-754E-40C9-AFB3-678A9A9D2490",
"versionEndExcluding": "4.4.294",
"versionStartIncluding": "3.2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "DB7F6C04-42D3-48A3-892D-2487383B9B6E",
"versionEndExcluding": "4.9.292",
"versionStartIncluding": "4.5",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "7080D941-9847-42F5-BA50-0A03CFB61FD1",
"versionEndExcluding": "4.14.257",
"versionStartIncluding": "4.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "B9EF0575-6BF6-4AD9-B9A0-5C8D7D71710C",
"versionEndExcluding": "4.19.219",
"versionStartIncluding": "4.15",
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},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "80E8F086-C9B9-4987-8B2E-B4A16D1DA7BA",
"versionEndExcluding": "5.4.163",
"versionStartIncluding": "4.20",
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},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "D4843826-EA9A-472B-82EC-B9E4FD4149AD",
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},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "990C08FB-0121-4296-896F-556312F8FF3B",
"versionEndExcluding": "5.15.6",
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"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8192e: Fix use after free in _rtl92e_pci_disconnect()\n\nThe free_rtllib() function frees the \"dev\" pointer so there is use\nafter free on the next line. Re-arrange things to avoid that."
},
{
"lang": "es",
"value": "En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: staging: rtl8192e: Corrige el use after free en _rtl92e_pci_disconnect() La funci\u00f3n free_rtllib() libera el puntero \"dev\" para que haya use after free en la siguiente l\u00ednea. Reorganice las cosas para evitar eso."
}
],
"id": "CVE-2021-47571",
"lastModified": "2026-06-17T04:17:47.570",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2021-47571",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-05-24T19:15:02.697856Z",
"version": "2.0.3"
}
}
]
},
"published": "2024-05-24T15:15:22.607",
"references": [
{
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],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Modified",
"weaknesses": [
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{
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"value": "CWE-416"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
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]
}
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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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