CVE-2025-40076

Estado: AplazadaSin puntuar—

In the Linux kernel, the following vulnerability has been resolved:

PCI: rcar-host: Pass proper IRQ domain to generic_handle_domain_irq()

Starting with commit dd26c1a23fd5 ("PCI: rcar-host: Switch to msi_create_parent_irq_domain()"), the MSI parent IRQ domain is NULL because the object of type struct irq_domain_info passed to:

has no reference to the parent IRQ domain. Using msi->domain->parent as an argument for generic_handle_domain_irq() leads to below error:

This error was identified while switching the upcoming RZ/G3S PCIe host controller driver to msi_create_parent_irq_domain() (which was using a similar pattern to handle MSIs (see link section)), but it was not tested on hardware using the pcie-rcar-host controller driver due to lack of hardware.

Leer descripción completaMostrar menos

[mani: reworded subject and description]

Detalles técnicos trazas, registros y código del informe original

msi_create_parent_irq_domain() ->
  irq_domain_instantiate()() ->
    __irq_domain_instantiate()

	"Unable to handle kernel NULL pointer dereference at virtual address"

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.18%
Percentil entre todas las CVEs puntuadas: 7
Fecha de la puntuación: 6/10/2026

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux Kernel^AI

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2025-40076",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "dd26c1a23fd5a607c50738ea0dcb6cdbb8185cfe",
              "lessThan": "e8e21aaf5d34015901cd271053a67a62b4204526",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "dd26c1a23fd5a607c50738ea0dcb6cdbb8185cfe",
              "lessThan": "d3fee10e40a938331e2aae34348691136db31304",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/pci/controller/pcie-rcar-host.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.17"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.17",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.17.3",
              "versionType": "semver",
              "lessThanOrEqual": "6.17.*"
            },
            {
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/pci/controller/pcie-rcar-host.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-10-28T12:15:42.160",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/d3fee10e40a938331e2aae34348691136db31304",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e8e21aaf5d34015901cd271053a67a62b4204526",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: rcar-host: Pass proper IRQ domain to generic_handle_domain_irq()\n\nStarting with commit dd26c1a23fd5 (\"PCI: rcar-host: Switch to\nmsi_create_parent_irq_domain()\"), the MSI parent IRQ domain is NULL because\nthe object of type struct irq_domain_info passed to:\n\nmsi_create_parent_irq_domain() ->\n  irq_domain_instantiate()() ->\n    __irq_domain_instantiate()\n\nhas no reference to the parent IRQ domain. Using msi->domain->parent as an\nargument for generic_handle_domain_irq() leads to below error:\n\n\t\"Unable to handle kernel NULL pointer dereference at virtual address\"\n\nThis error was identified while switching the upcoming RZ/G3S PCIe host\ncontroller driver to msi_create_parent_irq_domain() (which was using a\nsimilar pattern to handle MSIs (see link section)), but it was not tested\non hardware using the pcie-rcar-host controller driver due to lack of\nhardware.\n\n[mani: reworded subject and description]"
    }
  ],
  "lastModified": "2026-06-17T09:21:13.417",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}