{
  "id": "CVE-2022-26356",
  "sourceIdentifier": "security@xen.org",
  "published": "2022-04-05T13:15:07.727",
  "lastModified": "2024-02-04T08:15:09.967",
  "vulnStatus": "Modified",
  "descriptions": [
    {
      "lang": "en",
      "value": "Racy interactions between dirty vram tracking and paging log dirty hypercalls Activation of log dirty mode done by XEN_DMOP_track_dirty_vram (was named HVMOP_track_dirty_vram before Xen 4.9) is racy with ongoing log dirty hypercalls. A suitably timed call to XEN_DMOP_track_dirty_vram can enable log dirty while another CPU is still in the process of tearing down the structures related to a previously enabled log dirty mode (XEN_DOMCTL_SHADOW_OP_OFF). This is due to lack of mutually exclusive locking between both operations and can lead to entries being added in already freed slots, resulting in a memory leak."
    },
    {
      "lang": "es",
      "value": "Una activaci\u00f3n del modo de registro sucio realizada por XEN_DMOP_track_dirty_vram (es llamada HVMOP_track_dirty_vram antes de Xen versi\u00f3n 4.9) es producido con las hiperllamadas de registro sucio en curso. Una llamada a XEN_DMOP_track_dirty_vram con el tiempo apropiado puede habilitar log dirty mientras otra CPU est\u00e1 todav\u00eda en el proceso de desmontar las estructuras relacionadas con un modo log dirty previamente habilitado (XEN_DOMCTL_SHADOW_OP_OFF). Esto es debido a una falta de bloqueo mutuamente excluyente entre ambas operaciones y puede conllevar a que son a\u00f1adidas entradas en ranuras ya liberadas, dando lugar a una p\u00e9rdida de memoria"
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          "attackVector": "LOCAL",
          "attackComplexity": "HIGH",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
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          "baseScore": 5.6,
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          "accessVector": "LOCAL",
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          "authentication": "NONE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
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          "baseScore": 4.0
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        "obtainAllPrivilege": false,
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