gsd-2020-27675
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
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.
Aliases
Aliases
CVE-2020-27675


To clipboard 

{
  "GSD": {
    "alias": "CVE-2020-27675",
    "description": "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.",
    "id": "GSD-2020-27675",
    "references": [
      "https://www.suse.com/security/cve/CVE-2020-27675.html",
      "https://ubuntu.com/security/CVE-2020-27675",
      "https://advisories.mageia.org/CVE-2020-27675.html",
      "https://security.archlinux.org/CVE-2020-27675",
      "https://alas.aws.amazon.com/cve/html/CVE-2020-27675.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-27675"
      ],
      "details": "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.",
      "id": "GSD-2020-27675",
      "modified": "2023-12-13T01:22:11.492589Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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        "STATE": "PUBLIC"
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      "affects": {
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              "product": {
                "product_data": [
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    },
    "nvd.nist.gov": {
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        "problemtype": {
          "problemtype_data": [
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          ]
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      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "COMPLETE",
            "baseScore": 4.7,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:L/AC:M/Au:N/C:N/I:N/A:C",
            "version": "2.0"
          },
          "exploitabilityScore": 3.4,
          "impactScore": 6.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 4.7,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.0,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2022-04-26T16:29Z",
      "publishedDate": "2020-10-22T21:15Z"
    }
  }
}


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