CERTFR-2026-AVI-0509

Vulnerability from certfr_avis - Published: 2026-04-29 - Updated: 2026-04-29

De multiples vulnérabilités ont été découvertes dans Xen. Certaines d'entre elles permettent à un attaquant de provoquer une élévation de privilèges, un déni de service à distance et une atteinte à la confidentialité des données.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Impacted products
Vendor Product Description
XEN Xen Xen toutes versions utilisant XAPI sans les derniers correctifs de sécurité
XEN Xen Xen toutes versions incluant le correctif de sécurité XSA-419 sans le correctif xsa483-xapi.patch pour Xen XAPI oxenstored
XEN Xen Xen sur systèmes x86 ou Arm PVH ou HVM avec un noyau linux postérieur à 3.8 sans le correctif de sécurité xsa487-linux.patch
XEN Xen Xen toutes versions incluant le correctif de sécurité XSA-419 sans le correctif xsa483.patch pour Xen 4.18.x
XEN Xen Xen versions postérieures ou égales à 4.2 sans le correctif de sécurité xsa484.patch applicable pour Xen 4.18.x
XEN Xen Xen versions 4.17.x et 4.18.x sans le correctif de sécurité xsa486-4.18.patch
XEN Xen Xen versions postérieures ou égales à 4.2 sans le correctif de sécurité xsa484-4.17.patch applicable pour Xen 4.17.x
XEN Xen Xen avec un noyau linux postérieur à 4.12 sans le correctif de sécurité xsa485-linux.patch
XEN Xen Xen versions 4.19.x sans le correctif de sécurité xsa486.patch
XEN Xen Xen toutes versions incluant le correctif de sécurité XSA-419 sans le correctif xsa483-4.17.patch pour Xen 4.17.x
References

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{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Xen toutes versions utilisant XAPI sans les derniers correctifs de s\u00e9curit\u00e9",
      "product": {
        "name": "Xen",
        "vendor": {
          "name": "XEN",
          "scada": false
        }
      }
    },
    {
      "description": "Xen toutes versions incluant le correctif de s\u00e9curit\u00e9 XSA-419 sans le correctif xsa483-xapi.patch pour Xen XAPI oxenstored",
      "product": {
        "name": "Xen",
        "vendor": {
          "name": "XEN",
          "scada": false
        }
      }
    },
    {
      "description": "Xen sur syst\u00e8mes x86 ou Arm PVH ou HVM avec un noyau linux post\u00e9rieur \u00e0 3.8 sans le correctif de s\u00e9curit\u00e9 xsa487-linux.patch",
      "product": {
        "name": "Xen",
        "vendor": {
          "name": "XEN",
          "scada": false
        }
      }
    },
    {
      "description": "Xen toutes versions incluant le correctif de s\u00e9curit\u00e9 XSA-419 sans le correctif xsa483.patch pour Xen 4.18.x",
      "product": {
        "name": "Xen",
        "vendor": {
          "name": "XEN",
          "scada": false
        }
      }
    },
    {
      "description": "Xen versions post\u00e9rieures ou \u00e9gales \u00e0 4.2 sans le correctif de s\u00e9curit\u00e9 xsa484.patch applicable pour Xen 4.18.x",
      "product": {
        "name": "Xen",
        "vendor": {
          "name": "XEN",
          "scada": false
        }
      }
    },
    {
      "description": "Xen versions 4.17.x et 4.18.x sans le correctif de s\u00e9curit\u00e9 xsa486-4.18.patch",
      "product": {
        "name": "Xen",
        "vendor": {
          "name": "XEN",
          "scada": false
        }
      }
    },
    {
      "description": "Xen versions post\u00e9rieures ou \u00e9gales \u00e0 4.2 sans le correctif de s\u00e9curit\u00e9 xsa484-4.17.patch applicable pour Xen 4.17.x",
      "product": {
        "name": "Xen",
        "vendor": {
          "name": "XEN",
          "scada": false
        }
      }
    },
    {
      "description": "Xen avec un noyau linux post\u00e9rieur \u00e0 4.12 sans le correctif de s\u00e9curit\u00e9 xsa485-linux.patch ",
      "product": {
        "name": "Xen",
        "vendor": {
          "name": "XEN",
          "scada": false
        }
      }
    },
    {
      "description": "Xen versions 4.19.x  sans le correctif de s\u00e9curit\u00e9  xsa486.patch  ",
      "product": {
        "name": "Xen",
        "vendor": {
          "name": "XEN",
          "scada": false
        }
      }
    },
    {
      "description": "Xen toutes versions incluant le correctif de s\u00e9curit\u00e9 XSA-419 sans le correctif xsa483-4.17.patch pour Xen 4.17.x",
      "product": {
        "name": "Xen",
        "vendor": {
          "name": "XEN",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": "",
  "content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
  "cves": [
    {
      "name": "CVE-2026-31787",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-31787"
    },
    {
      "name": "CVE-2026-23559",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-23559"
    },
    {
      "name": "CVE-2026-42486",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-42486"
    },
    {
      "name": "CVE-2026-23558",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-23558"
    },
    {
      "name": "CVE-2026-23556",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-23556"
    },
    {
      "name": "CVE-2026-31786",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-31786"
    },
    {
      "name": "CVE-2026-23561",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-23561"
    },
    {
      "name": "CVE-2026-23557",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-23557"
    },
    {
      "name": "CVE-2026-23560",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-23560"
    },
    {
      "name": "CVE-2026-23562",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-23562"
    }
  ],
  "initial_release_date": "2026-04-29T00:00:00",
  "last_revision_date": "2026-04-29T00:00:00",
  "links": [],
  "reference": "CERTFR-2026-AVI-0509",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2026-04-29T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "D\u00e9ni de service \u00e0 distance"
    },
    {
      "description": "Contournement de la politique de s\u00e9curit\u00e9"
    },
    {
      "description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
    },
    {
      "description": "\u00c9l\u00e9vation de privil\u00e8ges"
    }
  ],
  "summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans Xen. Certaines d\u0027entre elles permettent \u00e0 un attaquant de provoquer une \u00e9l\u00e9vation de privil\u00e8ges, un d\u00e9ni de service \u00e0 distance et une atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es.",
  "title": "Multiples vuln\u00e9rabilit\u00e9s dans Xen",
  "vendor_advisories": [
    {
      "published_at": "2026-04-28",
      "title": "Bulletin de s\u00e9curit\u00e9 Xen xsa/advisory-484",
      "url": "https://xenbits.xen.org/xsa/advisory-484.html"
    },
    {
      "published_at": "2026-04-28",
      "title": "Bulletin de s\u00e9curit\u00e9 Xen xsa/advisory-489",
      "url": "https://xenbits.xen.org/xsa/advisory-489.html"
    },
    {
      "published_at": "2026-04-28",
      "title": "Bulletin de s\u00e9curit\u00e9 Xen xsa/advisory-485",
      "url": "https://xenbits.xen.org/xsa/advisory-485.html"
    },
    {
      "published_at": "2026-04-28",
      "title": "Bulletin de s\u00e9curit\u00e9 Xen xsa/advisory-486",
      "url": "https://xenbits.xen.org/xsa/advisory-486.html"
    },
    {
      "published_at": "2026-04-28",
      "title": "Bulletin de s\u00e9curit\u00e9 Xen xsa/advisory-487",
      "url": "https://xenbits.xen.org/xsa/advisory-487.html"
    },
    {
      "published_at": "2026-04-28",
      "title": "Bulletin de s\u00e9curit\u00e9 Xen xsa/advisory-483",
      "url": "https://xenbits.xen.org/xsa/advisory-483.html"
    }
  ]
}



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