{
  "affected": [
    {
      "ecosystem_specific": {},
      "package": {
        "ecosystem": "Alpine:v3.20",
        "name": "xen",
        "purl": "pkg:apk/alpine/xen?arch=source"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.5-r9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {},
      "package": {
        "ecosystem": "Alpine:v3.21",
        "name": "xen",
        "purl": "pkg:apk/alpine/xen?arch=source"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.19.5-r4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {},
      "package": {
        "ecosystem": "Alpine:v3.22",
        "name": "xen",
        "purl": "pkg:apk/alpine/xen?arch=source"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.20.3-r4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {},
      "package": {
        "ecosystem": "Alpine:v3.23",
        "name": "xen",
        "purl": "pkg:apk/alpine/xen?arch=source"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.20.3-r4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {},
      "package": {
        "ecosystem": "Alpine:v3.24",
        "name": "xen",
        "purl": "pkg:apk/alpine/xen?arch=source"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.21.1-r6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "[This CNA information record relates to multiple CVEs; the\ntext explains which aspects/vulnerabilities correspond to which CVE.]\n\nTo create and manage guests, domctl operations are used by the control\ndomain, a possible Xenstore domain, or by a domain controlling a\nparticular guest.  Some of these operations may not be executed in\nparallel, so a system-wide lock is used.  The way that lock is acquired\nis, however, not providing any fairness.  This is CVE-2026-42489.\n\nFurthermore, with XSM/Flask in use, the lock acquire will, for some\noperations, occur ahead of any permission checking.  This is\nCVE-2026-42490.",
  "id": "ALPINE-CVE-2026-42490",
  "modified": "2026-06-22T16:17:57.569516786Z",
  "published": "2026-06-18T14:17:25.600Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security.alpinelinux.org/vuln/CVE-2026-42490"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-42490"
  ]
}