CVE-2025-37946 (GCVE-0-2025-37946)
Vulnerability from cvelistv5
Published
2025-05-20 16:01
Modified
2025-05-26 05:24
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: s390/pci: Fix duplicate pci_dev_put() in disable_slot() when PF has child VFs With commit bcb5d6c76903 ("s390/pci: introduce lock to synchronize state of zpci_dev's") the code to ignore power off of a PF that has child VFs was changed from a direct return to a goto to the unlock and pci_dev_put() section. The change however left the existing pci_dev_put() untouched resulting in a doubple put. This can subsequently cause a use after free if the struct pci_dev is released in an unexpected state. Fix this by removing the extra pci_dev_put().
References
Impacted products
Vendor Product Version
Linux Linux Version: bcb5d6c769039c8358a2359e7c3ea5d97ce93108
Version: bcb5d6c769039c8358a2359e7c3ea5d97ce93108
Version: bcb5d6c769039c8358a2359e7c3ea5d97ce93108
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/hotplug/s390_pci_hpc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "versionType": "git"
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          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/hotplug/s390_pci_hpc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.9"
            },
            {
              "lessThan": "6.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.29",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.14.*",
              "status": "unaffected",
              "version": "6.14.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.15",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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                  "versionStartIncluding": "6.9",
                  "vulnerable": true
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                {
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                  "versionEndExcluding": "6.14.7",
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                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "6.15",
                  "versionStartIncluding": "6.9",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/pci: Fix duplicate pci_dev_put() in disable_slot() when PF has child VFs\n\nWith commit bcb5d6c76903 (\"s390/pci: introduce lock to synchronize state\nof zpci_dev\u0027s\") the code to ignore power off of a PF that has child VFs\nwas changed from a direct return to a goto to the unlock and\npci_dev_put() section. The change however left the existing pci_dev_put()\nuntouched resulting in a doubple put. This can subsequently cause a use\nafter free if the struct pci_dev is released in an unexpected state.\nFix this by removing the extra pci_dev_put()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-26T05:24:17.616Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c488f8b53e156d6dcc0514ef0afa3a33376b8f9e"
        },
        {
          "url": "https://git.kernel.org/stable/c/957529baef142d95e0d1b1bea786675bd47dbe53"
        },
        {
          "url": "https://git.kernel.org/stable/c/05a2538f2b48500cf4e8a0a0ce76623cc5bafcf1"
        }
      ],
      "title": "s390/pci: Fix duplicate pci_dev_put() in disable_slot() when PF has child VFs",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-37946",
    "datePublished": "2025-05-20T16:01:43.162Z",
    "dateReserved": "2025-04-16T04:51:23.972Z",
    "dateUpdated": "2025-05-26T05:24:17.616Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-37946\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-05-20T16:15:32.577\",\"lastModified\":\"2025-05-21T20:24:58.133\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ns390/pci: Fix duplicate pci_dev_put() in disable_slot() when PF has child VFs\\n\\nWith commit bcb5d6c76903 (\\\"s390/pci: introduce lock to synchronize state\\nof zpci_dev\u0027s\\\") the code to ignore power off of a PF that has child VFs\\nwas changed from a direct return to a goto to the unlock and\\npci_dev_put() section. The change however left the existing pci_dev_put()\\nuntouched resulting in a doubple put. This can subsequently cause a use\\nafter free if the struct pci_dev is released in an unexpected state.\\nFix this by removing the extra pci_dev_put().\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: s390/pci: Se ha corregido un error pci_dev_put() duplicado en disabled_slot() cuando un PF tiene VFs secundarios. Con el commit bcb5d6c76903 (\\\"s390/pci: introducir un bloqueo para sincronizar el estado de zpci_dev\\\"), el c\u00f3digo para ignorar el apagado de un PF con VFs secundarios se cambi\u00f3 de un retorno directo a un goto a la secci\u00f3n de desbloqueo y pci_dev_put(). Sin embargo, el cambio dej\u00f3 intacto el pci_dev_put() existente, lo que result\u00f3 en un doble put. Esto puede provocar un use after free si la estructura pci_dev se libera en un estado inesperado. Se soluciona eliminando el pci_dev_put() adicional.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/05a2538f2b48500cf4e8a0a0ce76623cc5bafcf1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/957529baef142d95e0d1b1bea786675bd47dbe53\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c488f8b53e156d6dcc0514ef0afa3a33376b8f9e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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