ghsa-632w-7gxq-vxq4
Vulnerability from github
Published
2025-07-28 12:30
Modified
2025-07-28 12:30
Details

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]

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{
  "affected": [],
  "aliases": [
    "CVE-2025-38469"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-28T12:15:28Z",
    "severity": null
  },
  "details": "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]",
  "id": "GHSA-632w-7gxq-vxq4",
  "modified": "2025-07-28T12:30:34Z",
  "published": "2025-07-28T12:30:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38469"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/061c553c66bc1638c280739999224c8000fd4602"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3ee59c38ae7369ad1f7b846e05633ccf0d159fab"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5a53249d149f48b558368c5338b9921b76a12f8c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fd627ac8a5cff4d45269f164b13ddddc0726f2cc"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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