ghsa-5jmq-x85f-gprc
Vulnerability from github
Published
2022-01-26 00:01
Modified
2022-03-26 00:01
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

A PV guest could DoS Xen while unmapping a grant To address XSA-380, reference counting was introduced for grant mappings for the case where a PV guest would have the IOMMU enabled. PV guests can request two forms of mappings. When both are in use for any individual mapping, unmapping of such a mapping can be requested in two steps. The reference count for such a mapping would then mistakenly be decremented twice. Underflow of the counters gets detected, resulting in the triggering of a hypervisor bug check.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-23034"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-191"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-01-25T14:15:00Z",
    "severity": "MODERATE"
  },
  "details": "A PV guest could DoS Xen while unmapping a grant To address XSA-380, reference counting was introduced for grant mappings for the case where a PV guest would have the IOMMU enabled. PV guests can request two forms of mappings. When both are in use for any individual mapping, unmapping of such a mapping can be requested in two steps. The reference count for such a mapping would then mistakenly be decremented twice. Underflow of the counters gets detected, resulting in the triggering of a hypervisor bug check.",
  "id": "GHSA-5jmq-x85f-gprc",
  "modified": "2022-03-26T00:01:04Z",
  "published": "2022-01-26T00:01:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-23034"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OMR6UBGJW6JKND7IILGQ2CU35EQPF3E3"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202208-23"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2022/dsa-5117"
    },
    {
      "type": "WEB",
      "url": "https://xenbits.xenproject.org/xsa/advisory-394.txt"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2022/01/25/3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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