gsd-2024-26814
Vulnerability from gsd
Modified
2024-02-20 06:02
Details
In the Linux kernel, the following vulnerability has been resolved: vfio/fsl-mc: Block calling interrupt handler without trigger The eventfd_ctx trigger pointer of the vfio_fsl_mc_irq object is initially NULL and may become NULL if the user sets the trigger eventfd to -1. The interrupt handler itself is guaranteed that trigger is always valid between request_irq() and free_irq(), but the loopback testing mechanisms to invoke the handler function need to test the trigger. The triggering and setting ioctl paths both make use of igate and are therefore mutually exclusive. The vfio-fsl-mc driver does not make use of irqfds, nor does it support any sort of masking operations, therefore unlike vfio-pci and vfio-platform, the flow can remain essentially unchanged.
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{
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2024-26814"
      ],
      "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nvfio/fsl-mc: Block calling interrupt handler without trigger\n\nThe eventfd_ctx trigger pointer of the vfio_fsl_mc_irq object is\ninitially NULL and may become NULL if the user sets the trigger\neventfd to -1.  The interrupt handler itself is guaranteed that\ntrigger is always valid between request_irq() and free_irq(), but\nthe loopback testing mechanisms to invoke the handler function\nneed to test the trigger.  The triggering and setting ioctl paths\nboth make use of igate and are therefore mutually exclusive.\n\nThe vfio-fsl-mc driver does not make use of irqfds, nor does it\nsupport any sort of masking operations, therefore unlike vfio-pci\nand vfio-platform, the flow can remain essentially unchanged.",
      "id": "GSD-2024-26814",
      "modified": "2024-02-20T06:02:29.251660Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@kernel.org",
        "ID": "CVE-2024-26814",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Linux",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "cc0ee20bd969",
                          "version_value": "a563fc18583c"
                        },
                        {
                          "version_value": "not down converted",
                          "x_cve_json_5_version_data": {
                            "defaultStatus": "affected",
                            "versions": [
                              {
                                "status": "affected",
                                "version": "5.10"
                              },
                              {
                                "lessThan": "5.10",
                                "status": "unaffected",
                                "version": "0",
                                "versionType": "custom"
                              },
                              {
                                "lessThanOrEqual": "5.10.*",
                                "status": "unaffected",
                                "version": "5.10.215",
                                "versionType": "custom"
                              },
                              {
                                "lessThanOrEqual": "5.15.*",
                                "status": "unaffected",
                                "version": "5.15.154",
                                "versionType": "custom"
                              },
                              {
                                "lessThanOrEqual": "6.1.*",
                                "status": "unaffected",
                                "version": "6.1.84",
                                "versionType": "custom"
                              },
                              {
                                "lessThanOrEqual": "6.6.*",
                                "status": "unaffected",
                                "version": "6.6.24",
                                "versionType": "custom"
                              },
                              {
                                "lessThanOrEqual": "6.7.*",
                                "status": "unaffected",
                                "version": "6.7.12",
                                "versionType": "custom"
                              },
                              {
                                "lessThanOrEqual": "6.8.*",
                                "status": "unaffected",
                                "version": "6.8.3",
                                "versionType": "custom"
                              },
                              {
                                "lessThanOrEqual": "*",
                                "status": "unaffected",
                                "version": "6.9-rc1",
                                "versionType": "original_commit_for_fix"
                              }
                            ]
                          }
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Linux"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvfio/fsl-mc: Block calling interrupt handler without trigger\n\nThe eventfd_ctx trigger pointer of the vfio_fsl_mc_irq object is\ninitially NULL and may become NULL if the user sets the trigger\neventfd to -1.  The interrupt handler itself is guaranteed that\ntrigger is always valid between request_irq() and free_irq(), but\nthe loopback testing mechanisms to invoke the handler function\nneed to test the trigger.  The triggering and setting ioctl paths\nboth make use of igate and are therefore mutually exclusive.\n\nThe vfio-fsl-mc driver does not make use of irqfds, nor does it\nsupport any sort of masking operations, therefore unlike vfio-pci\nand vfio-platform, the flow can remain essentially unchanged."
          }
        ]
      },
      "generator": {
        "engine": "bippy-d175d3acf727"
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "n/a"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://git.kernel.org/stable/c/a563fc18583ca4f42e2fdd0c70c7c618288e7ede",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/a563fc18583ca4f42e2fdd0c70c7c618288e7ede"
          },
          {
            "name": "https://git.kernel.org/stable/c/250219c6a556f8c69c5910fca05a59037e24147d",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/250219c6a556f8c69c5910fca05a59037e24147d"
          },
          {
            "name": "https://git.kernel.org/stable/c/083e750c9f5f4c3bf61161330fb84d7c8e8bb417",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/083e750c9f5f4c3bf61161330fb84d7c8e8bb417"
          },
          {
            "name": "https://git.kernel.org/stable/c/ee0bd4ad780dfbb60355b99f25063357ab488267",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/ee0bd4ad780dfbb60355b99f25063357ab488267"
          },
          {
            "name": "https://git.kernel.org/stable/c/de87511fb0404d23b6da5f4660383b6ed095e28d",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/de87511fb0404d23b6da5f4660383b6ed095e28d"
          },
          {
            "name": "https://git.kernel.org/stable/c/6ec0d88166dac43f29e96801c0927d514f17add9",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/6ec0d88166dac43f29e96801c0927d514f17add9"
          },
          {
            "name": "https://git.kernel.org/stable/c/7447d911af699a15f8d050dfcb7c680a86f87012",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/7447d911af699a15f8d050dfcb7c680a86f87012"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "cve": {
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvfio/fsl-mc: Block calling interrupt handler without trigger\n\nThe eventfd_ctx trigger pointer of the vfio_fsl_mc_irq object is\ninitially NULL and may become NULL if the user sets the trigger\neventfd to -1.  The interrupt handler itself is guaranteed that\ntrigger is always valid between request_irq() and free_irq(), but\nthe loopback testing mechanisms to invoke the handler function\nneed to test the trigger.  The triggering and setting ioctl paths\nboth make use of igate and are therefore mutually exclusive.\n\nThe vfio-fsl-mc driver does not make use of irqfds, nor does it\nsupport any sort of masking operations, therefore unlike vfio-pci\nand vfio-platform, the flow can remain essentially unchanged."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: vfio/fsl-mc: Bloquear el controlador de interrupciones de llamada sin disparador. El puntero de disparo eventfd_ctx del objeto vfio_fsl_mc_irq es inicialmente NULL y puede convertirse en NULL si el usuario establece el disparador eventfd en -1. El propio controlador de interrupciones garantiza que el disparador siempre ser\u00e1 v\u00e1lido entre request_irq() y free_irq(), pero los mecanismos de prueba de bucle invertido para invocar la funci\u00f3n del controlador deben probar el disparador. Las rutas de activaci\u00f3n y configuraci\u00f3n de ioctl utilizan igate y, por lo tanto, son mutuamente excluyentes. El controlador vfio-fsl-mc no utiliza irqfds ni admite ning\u00fan tipo de operaci\u00f3n de enmascaramiento; por lo tanto, a diferencia de vfio-pci y vfio-platform, el flujo puede permanecer esencialmente sin cambios."
          }
        ],
        "id": "CVE-2024-26814",
        "lastModified": "2024-04-13T12:15:11.683",
        "metrics": {},
        "published": "2024-04-05T09:15:09.393",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/083e750c9f5f4c3bf61161330fb84d7c8e8bb417"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/250219c6a556f8c69c5910fca05a59037e24147d"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/6ec0d88166dac43f29e96801c0927d514f17add9"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/7447d911af699a15f8d050dfcb7c680a86f87012"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/a563fc18583ca4f42e2fdd0c70c7c618288e7ede"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/de87511fb0404d23b6da5f4660383b6ed095e28d"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/ee0bd4ad780dfbb60355b99f25063357ab488267"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Awaiting Analysis"
      }
    }
  }
}


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