CVE-2025-38469 (GCVE-0-2025-38469)
Vulnerability from cvelistv5
Published
2025-07-28 11:21
Modified
2025-07-28 11:21
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
Impacted products
Vendor Product Version
Linux Linux Version: 92c58965e9656dc6e682a8ffe520fac0fb256d13
Version: 92c58965e9656dc6e682a8ffe520fac0fb256d13
Version: 92c58965e9656dc6e682a8ffe520fac0fb256d13
Version: 92c58965e9656dc6e682a8ffe520fac0fb256d13
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/x86/kvm/xen.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
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              "versionType": "git"
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          ]
        },
        {
          "defaultStatus": "affected",
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          "programFiles": [
            "arch/x86/kvm/xen.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.2"
            },
            {
              "lessThan": "6.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.100",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "versionEndExcluding": "6.6.100",
                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.40",
                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15.8",
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16",
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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]"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-28T11:21:30.992Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3ee59c38ae7369ad1f7b846e05633ccf0d159fab"
        },
        {
          "url": "https://git.kernel.org/stable/c/fd627ac8a5cff4d45269f164b13ddddc0726f2cc"
        },
        {
          "url": "https://git.kernel.org/stable/c/061c553c66bc1638c280739999224c8000fd4602"
        },
        {
          "url": "https://git.kernel.org/stable/c/5a53249d149f48b558368c5338b9921b76a12f8c"
        }
      ],
      "title": "KVM: x86/xen: Fix cleanup logic in emulation of Xen schedop poll hypercalls",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38469",
    "datePublished": "2025-07-28T11:21:30.992Z",
    "dateReserved": "2025-04-16T04:51:24.020Z",
    "dateUpdated": "2025-07-28T11:21:30.992Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38469\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-07-28T12:15:28.640\",\"lastModified\":\"2025-07-29T14:14:29.590\",\"vulnStatus\":\"Awaiting Analysis\",\"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]\"}],\"metrics\":{},\"references\":[{\"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\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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