admin/nvd-json-data-feeds
1
0
Fork 0
mirror of https://github.com/fkie-cad/nvd-json-data-feeds.git synced 2025-05-29 01:31:20 +00:00
Code Issues Packages Projects Releases Wiki Activity
nvd-json-data-feeds/CVE-2021/CVE-2021-475xx/CVE-2021-47506.json
cad-safe-bot a97735b46c Auto-Update: 2025-01-06T21:00:20.391034+00:00
2025-01-06 21:03:44 +00:00

248 lines
9.3 KiB
JSON
Raw Blame History

{
"id": "CVE-2021-47506",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2024-05-24T15:15:11.197",
"lastModified": "2025-01-06T20:44:45.983",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: fix use-after-free due to delegation race\n\nA delegation break could arrive as soon as we've called vfs_setlease. A\ndelegation break runs a callback which immediately (in\nnfsd4_cb_recall_prepare) adds the delegation to del_recall_lru. If we\nthen exit nfs4_set_delegation without hashing the delegation, it will be\nfreed as soon as the callback is done with it, without ever being\nremoved from del_recall_lru.\n\nSymptoms show up later as use-after-free or list corruption warnings,\nusually in the laundromat thread.\n\nI suspect aba2072f4523 \"nfsd: grant read delegations to clients holding\nwrites\" made this bug easier to hit, but I looked as far back as v3.0\nand it looks to me it already had the same problem. So I'm not sure\nwhere the bug was introduced; it may have been there from the beginning."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nfsd: corrige el use-after-free debido a la ejecuci\u00f3n de delegaci\u00f3n. Una interrupci\u00f3n de la delegaci\u00f3n podr\u00eda llegar tan pronto como hayamos llamado a vfs_setlease. Una interrupci\u00f3n de la delegaci\u00f3n ejecuta una devoluci\u00f3n de llamada que inmediatamente (en nfsd4_cb_recall_prepare) agrega la delegaci\u00f3n a del_recall_lru. Si luego salimos de nfs4_set_delegation sin aplicar hash a la delegaci\u00f3n, se liberar\u00e1 tan pronto como finalice la devoluci\u00f3n de llamada, sin eliminarse nunca de del_recall_lru. Los s\u00edntomas aparecen m\u00e1s tarde como advertencias de use-after-free o de corrupci\u00f3n en la lista, generalmente en el hilo de la lavander\u00eda. Sospecho que aba2072f4523 \"nfsd: otorgar delegaciones de lectura a clientes que tienen escrituras\" hizo que este error fuera m\u00e1s f\u00e1cil de corregir, pero mir\u00e9 hasta la versi\u00f3n 3.0 y me parece que ya ten\u00eda el mismo problema. Entonces no estoy seguro de d\u00f3nde se introdujo el error; puede que haya estado ah\u00ed desde el principio."
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "nvd@nist.gov",
"type": "Primary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9
}
]
},
"weaknesses": [
{
"source": "nvd@nist.gov",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "CWE-416"
}
]
}
],
"configurations": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "4.4.296",
"matchCriteriaId": "1FF3BCF2-4788-45E7-BDAC-845DEBF8922F"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.5",
"versionEndExcluding": "4.9.294",
"matchCriteriaId": "BEC14782-2EE3-4635-A927-91559E4F451C"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.10",
"versionEndExcluding": "4.14.259",
"matchCriteriaId": "390D64FF-1DB7-4DD1-ADEF-CE96BEA2607C"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.15",
"versionEndExcluding": "4.19.222",
"matchCriteriaId": "2D0D89BC-6CF8-4BFB-8C91-472348052528"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.20",
"versionEndExcluding": "5.4.168",
"matchCriteriaId": "195EBAA1-4CCE-4898-9351-F4A0DBCAA022"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.5",
"versionEndExcluding": "5.10.85",
"matchCriteriaId": "D9668578-08F7-4694-A86F-FCE448387A79"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.11",
"versionEndExcluding": "5.15.8",
"matchCriteriaId": "6664ACE2-F748-4AE5-B98B-58803B0B2C3E"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*",
"matchCriteriaId": "E46C74C6-B76B-4C94-A6A4-FD2FFF62D644"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*",
"matchCriteriaId": "60134C3A-06E4-48C1-B04F-2903732A4E56"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:*",
"matchCriteriaId": "0460DA88-8FE1-46A2-9DDA-1F1ABA552E71"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:5.15:rc4:*:*:*:*:*:*",
"matchCriteriaId": "AF55383D-4DF2-45DC-93F7-571F4F978EAB"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/04a8d07f3d58308b92630045560799a3faa3ebce",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/148c816f10fd11df27ca6a9b3238cdd42fa72cd3",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/2becaa990b93cbd2928292c0b669d3abb6cf06d4",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/33645d3e22720cac1e4548f8fef57bf0649536ee",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/348714018139c39533c55661a0c7c990671396b4",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/548ec0805c399c65ed66c6641be467f717833ab5",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/e0759696de6851d7536efddfdd2dfed4c4df1f09",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/eeb0711801f5e19ef654371b627682aed3b11373",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/04a8d07f3d58308b92630045560799a3faa3ebce",
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/148c816f10fd11df27ca6a9b3238cdd42fa72cd3",
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/2becaa990b93cbd2928292c0b669d3abb6cf06d4",
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/33645d3e22720cac1e4548f8fef57bf0649536ee",
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/348714018139c39533c55661a0c7c990671396b4",
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/548ec0805c399c65ed66c6641be467f717833ab5",
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/e0759696de6851d7536efddfdd2dfed4c4df1f09",
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/eeb0711801f5e19ef654371b627682aed3b11373",
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
]
}
]
}
Reference in New Issue View Git Blame Copy Permalink