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nvd-json-data-feeds/CVE-2020/CVE-2020-276xx/CVE-2020-27675.json
cad-safe-bot e6cbafdc40 Auto-Update: 2024-12-08T03:00:18.988682+00:00
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{
"id": "CVE-2020-27675",
"sourceIdentifier": "cve@mitre.org",
"published": "2020-10-22T21:15:14.153",
"lastModified": "2024-11-21T05:21:38.707",
"vulnStatus": "Modified",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "An issue was discovered in the Linux kernel through 5.9.1, as used with Xen through 4.14.x. drivers/xen/events/events_base.c allows event-channel removal during the event-handling loop (a race condition). This can cause a use-after-free or NULL pointer dereference, as demonstrated by a dom0 crash via events for an in-reconfiguration paravirtualized device, aka CID-073d0552ead5."
},
{
"lang": "es",
"value": "Se detect\u00f3 un problema en el kernel de Linux versiones hasta 5.9.1, como es usado con Xen versiones hasta 4.14.x. El archivo drivers/xen/events/events_base.c permite la eliminaci\u00f3n del canal de eventos durante el ciclo de manejo de eventos (una condici\u00f3n de carrera). Esto puede causar una desreferencia del puntero NULL y un uso de la memoria previamente liberada como es demostrado por un bloqueo dom0 por medio de eventos para un dispositivo paravirtualizado en reconfiguraci\u00f3n, tambi\u00e9n se conoce como CID-073d0552ead5"
}
],
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"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
"baseScore": 4.7,
"baseSeverity": "MEDIUM",
"attackVector": "LOCAL",
"attackComplexity": "HIGH",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.0,
"impactScore": 3.6
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"accessComplexity": "MEDIUM",
"authentication": "NONE",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "COMPLETE"
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"baseSeverity": "MEDIUM",
"exploitabilityScore": 3.4,
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"acInsufInfo": false,
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