CVE-2025-40296 (GCVE-0-2025-40296)

Vulnerability from cvelistv5 – Published: 2025-12-08 00:46 – Updated: 2026-05-11 21:46
VLAI
Title
platform/x86: int3472: Fix double free of GPIO device during unregister
Summary
In the Linux kernel, the following vulnerability has been resolved: platform/x86: int3472: Fix double free of GPIO device during unregister regulator_unregister() already frees the associated GPIO device. On ThinkPad X9 (Lunar Lake), this causes a double free issue that leads to random failures when other drivers (typically Intel THC) attempt to allocate interrupts. The root cause is that the reference count of the pinctrl_intel_platform module unexpectedly drops to zero when this driver defers its probe. This behavior can also be reproduced by unloading the module directly. Fix the issue by removing the redundant release of the GPIO device during regulator unregistration.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6666 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1e5d088a52c207bcef6a43a6f6ffe162c514ed64 , < b8113bb56c45bd17bac5144b55591f9cdbd6aabe (git)
Affected: 1e5d088a52c207bcef6a43a6f6ffe162c514ed64 , < f0f7a3f542c1698edb69075f25a3f846207facba (git)
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Linux Linux Affected: 6.16
Unaffected: 0 , < 6.16 (semver)
Unaffected: 6.17.8 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/platform/x86/intel/int3472/clk_and_regulator.c",
            "include/linux/platform_data/x86/int3472.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "b8113bb56c45bd17bac5144b55591f9cdbd6aabe",
              "status": "affected",
              "version": "1e5d088a52c207bcef6a43a6f6ffe162c514ed64",
              "versionType": "git"
            },
            {
              "lessThan": "f0f7a3f542c1698edb69075f25a3f846207facba",
              "status": "affected",
              "version": "1e5d088a52c207bcef6a43a6f6ffe162c514ed64",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/platform/x86/intel/int3472/clk_and_regulator.c",
            "include/linux/platform_data/x86/int3472.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.16"
            },
            {
              "lessThan": "6.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.8",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: int3472: Fix double free of GPIO device during unregister\n\nregulator_unregister() already frees the associated GPIO device. On\nThinkPad X9 (Lunar Lake), this causes a double free issue that leads to\nrandom failures when other drivers (typically Intel THC) attempt to\nallocate interrupts. The root cause is that the reference count of the\npinctrl_intel_platform module unexpectedly drops to zero when this\ndriver defers its probe.\n\nThis behavior can also be reproduced by unloading the module directly.\n\nFix the issue by removing the redundant release of the GPIO device\nduring regulator unregistration."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:46:36.351Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/b8113bb56c45bd17bac5144b55591f9cdbd6aabe"
        },
        {
          "url": "https://git.kernel.org/stable/c/f0f7a3f542c1698edb69075f25a3f846207facba"
        }
      ],
      "title": "platform/x86: int3472: Fix double free of GPIO device during unregister",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40296",
    "datePublished": "2025-12-08T00:46:20.017Z",
    "dateReserved": "2025-04-16T07:20:57.185Z",
    "dateUpdated": "2026-05-11T21:46:36.351Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-40296",
      "date": "2026-10-16",
      "epss": "0.00185",
      "percentile": "0.07537"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/platform/x86/intel/int3472/clk_and_regulator.c",
                  "include/linux/platform_data/x86/int3472.h"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "b8113bb56c45bd17bac5144b55591f9cdbd6aabe",
                    "status": "affected",
                    "version": "1e5d088a52c207bcef6a43a6f6ffe162c514ed64",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "f0f7a3f542c1698edb69075f25a3f846207facba",
                    "status": "affected",
                    "version": "1e5d088a52c207bcef6a43a6f6ffe162c514ed64",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/platform/x86/intel/int3472/clk_and_regulator.c",
                  "include/linux/platform_data/x86/int3472.h"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "6.16"
                  },
                  {
                    "lessThan": "6.16",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.17.*",
                    "status": "unaffected",
                    "version": "6.17.8",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "6.18",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: int3472: Fix double free of GPIO device during unregister\n\nregulator_unregister() already frees the associated GPIO device. On\nThinkPad X9 (Lunar Lake), this causes a double free issue that leads to\nrandom failures when other drivers (typically Intel THC) attempt to\nallocate interrupts. The root cause is that the reference count of the\npinctrl_intel_platform module unexpectedly drops to zero when this\ndriver defers its probe.\n\nThis behavior can also be reproduced by unloading the module directly.\n\nFix the issue by removing the redundant release of the GPIO device\nduring regulator unregistration."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nplatform/x86: int3472: Correcci\u00f3n de doble liberaci\u00f3n del dispositivo GPIO durante el desregistro\n\nregulator_unregister() ya libera el dispositivo GPIO asociado. En ThinkPad X9 (Lunar Lake), esto causa un problema de doble liberaci\u00f3n que conduce a fallos aleatorios cuando otros controladores (t\u00edpicamente Intel THC) intentan asignar interrupciones. La causa ra\u00edz es que el contador de referencias del m\u00f3dulo pinctrl_intel_platform cae inesperadamente a cero cuando este controlador aplaza su sondeo.\n\nEste comportamiento tambi\u00e9n puede ser reproducido descargando el m\u00f3dulo directamente.\n\nSoluciona el problema eliminando la liberaci\u00f3n redundante del dispositivo GPIO durante el desregistro del regulador."
          }
        ],
        "id": "CVE-2025-40296",
        "lastModified": "2026-10-14T22:10:00.210",
        "metrics": {},
        "published": "2025-12-08T01:16:01.690",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/b8113bb56c45bd17bac5144b55591f9cdbd6aabe"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/f0f7a3f542c1698edb69075f25a3f846207facba"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:17:17+00:00",
      "cve": "CVE-2025-40296",
      "id": "CVE-2025-40296",
      "initial_release_date": "2025-12-08T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: platform/x86: int3472: Fix double free of GPIO device during unregister",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-40296.json",
      "version": "3"
    }
  }
}



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