fkie_cve-2025-38469
Vulnerability from fkie_nvd
Published
2025-07-28 12:15
Modified
2025-07-29 14:14
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: KVM: x86/xen: Fix cleanup logic in emulation of Xen schedop poll hypercalls kvm_xen_schedop_poll does a kmalloc_array() when a VM polls the host for more than one event channel potr (nr_ports > 1). After the kmalloc_array(), the error paths need to go through the "out" label, but the call to kvm_read_guest_virt() does not. [Adjusted commit message. - Paolo]
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/061c553c66bc1638c280739999224c8000fd4602
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3ee59c38ae7369ad1f7b846e05633ccf0d159fab
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5a53249d149f48b558368c5338b9921b76a12f8c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fd627ac8a5cff4d45269f164b13ddddc0726f2cc
Impacted products
Vendor Product Version


To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: x86/xen: Fix cleanup logic in emulation of Xen schedop poll hypercalls\n\nkvm_xen_schedop_poll does a kmalloc_array() when a VM polls the host\nfor more than one event channel potr (nr_ports \u003e 1).\n\nAfter the kmalloc_array(), the error paths need to go through the\n\"out\" label, but the call to kvm_read_guest_virt() does not.\n\n[Adjusted commit message. - Paolo]"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: KVM: x86/xen: Se corrige la l\u00f3gica de limpieza en la emulaci\u00f3n de las hiperllamadas de sondeo schedop de Xen. kvm_xen_schedop_poll ejecuta kmalloc_array() cuando una m\u00e1quina virtual sondea el host en busca de m\u00e1s de un canal de eventos potr (nr_ports \u0026gt; 1). Despu\u00e9s de kmalloc_array(), las rutas de error deben pasar por la etiqueta \"out\", pero la llamada a kvm_read_guest_virt() no. [Mensaje de confirmaci\u00f3n ajustado. - Paolo]"
    }
  ],
  "id": "CVE-2025-38469",
  "lastModified": "2025-07-29T14:14:29.590",
  "metrics": {},
  "published": "2025-07-28T12:15:28.640",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/061c553c66bc1638c280739999224c8000fd4602"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3ee59c38ae7369ad1f7b846e05633ccf0d159fab"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5a53249d149f48b558368c5338b9921b76a12f8c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/fd627ac8a5cff4d45269f164b13ddddc0726f2cc"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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