ghsa-j2cm-6mgm-v7v4
Vulnerability from github
Published
2022-05-13 01:05
Modified
2022-05-13 01:05
Severity ?
5.6 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H
Details

A flaw was found in the way KVM hypervisor handled x2APIC Machine Specific Rregister (MSR) access with nested(=1) virtualization enabled. In that, L1 guest could access L0's APIC register values via L2 guest, when 'virtualize x2APIC mode' is enabled. A guest could use this flaw to potentially crash the host kernel resulting in DoS issue. Kernel versions from 4.16 and newer are vulnerable to this issue.

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{
  "affected": [],
  "aliases": [
    "CVE-2019-3887"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-863"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2019-04-09T16:29:00Z",
    "severity": "MODERATE"
  },
  "details": "A flaw was found in the way KVM hypervisor handled x2APIC Machine Specific Rregister (MSR) access with nested(=1) virtualization enabled. In that, L1 guest could access L0\u0027s APIC register values via L2 guest, when \u0027virtualize x2APIC mode\u0027 is enabled. A guest could use this flaw to potentially crash the host kernel resulting in DoS issue. Kernel versions from 4.16 and newer are vulnerable to this issue.",
  "id": "GHSA-j2cm-6mgm-v7v4",
  "modified": "2022-05-13T01:05:21Z",
  "published": "2022-05-13T01:05:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-3887"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2019:2703"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2019:2741"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2019-3887"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1695044"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3887"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IWPOIII2L73HV5PGXSGMRMKQIK47UIYE"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IWPOIII2L73HV5PGXSGMRMKQIK47UIYE"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/3979-1"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/3980-1"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/3980-2"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/107850"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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