Vulnerability-Lookup

GHSA-G38X-R7HR-WWFF

Vulnerability from github – Published: 2026-01-14 15:33 – Updated: 2026-07-14 15:31

Details

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

via_wdt: fix critical boot hang due to unnamed resource allocation

The VIA watchdog driver uses allocate_resource() to reserve a MMIO region for the watchdog control register. However, the allocated resource was not given a name, which causes the kernel resource tree to contain an entry marked as "" under /proc/iomem on x86 platforms.

During boot, this unnamed resource can lead to a critical hang because subsequent resource lookups and conflict checks fail to handle the invalid entry properly.

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2025-71114"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-14T15:16:01Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nvia_wdt: fix critical boot hang due to unnamed resource allocation\n\nThe VIA watchdog driver uses allocate_resource() to reserve a MMIO\nregion for the watchdog control register. However, the allocated\nresource was not given a name, which causes the kernel resource tree\nto contain an entry marked as \"\u003cBAD\u003e\" under /proc/iomem on x86\nplatforms.\n\nDuring boot, this unnamed resource can lead to a critical hang because\nsubsequent resource lookups and conflict checks fail to handle the\ninvalid entry properly.",
  "id": "GHSA-g38x-r7hr-wwff",
  "modified": "2026-07-14T15:31:32Z",
  "published": "2026-01-14T15:33:01Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-71114"
    },
    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1d56025a3af50db0f3da2792f41eb9943eee5324"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/47c910965c936724070d2a8094a4c3ed8f452856"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7aa31ee9ec92915926e74731378c009c9cc04928"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c6a2dd4f2e4e6cbdfe7a1618160281af897b75db"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c7b986adc9e9336066350542ac5a2005d305ae78"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d2c7c90aca7b37f60f16b2bedcfeb16204f2f35d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f7b6370d0fbee06a867037d675797a606cb62e57"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-71114 (GCVE-0-2025-71114)

Vulnerability from cvelistv5 – Published: 2026-01-14 15:06 – Updated: 2026-09-08 08:43

Title

via_wdt: fix critical boot hang due to unnamed resource allocation

Summary

In the Linux kernel, the following vulnerability has been resolved: via_wdt: fix critical boot hang due to unnamed resource allocation The VIA watchdog driver uses allocate_resource() to reserve a MMIO region for the watchdog control register. However, the allocated resource was not given a name, which causes the kernel resource tree to contain an entry marked as "<BAD>" under /proc/iomem on x86 platforms. During boot, this unnamed resource can lead to a critical hang because subsequent resource lookups and conflict checks fail to handle the invalid entry properly.

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-10 20:41 UTC

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/1d56025a3af50db0f…
https://git.kernel.org/stable/c/c7b986adc9e933606…
https://git.kernel.org/stable/c/47c910965c9367240…
https://git.kernel.org/stable/c/d2c7c90aca7b37f60…
https://git.kernel.org/stable/c/f7b6370d0fbee06a8…
https://git.kernel.org/stable/c/c6a2dd4f2e4e6cbdf…
https://git.kernel.org/stable/c/7aa31ee9ec9291592…
https://cert-portal.siemens.com/productcert/html/…

Impacted products

5 products

Vendor	Product	Version
Linux	Linux	Affected: dc3c56b703dad4aec8a9b3dd86f03a90d0c26a2d , < 1d56025a3af50db0f3da2792f41eb9943eee5324 (git) Affected: dc3c56b703dad4aec8a9b3dd86f03a90d0c26a2d , < c7b986adc9e9336066350542ac5a2005d305ae78 (git) Affected: dc3c56b703dad4aec8a9b3dd86f03a90d0c26a2d , < 47c910965c936724070d2a8094a4c3ed8f452856 (git) Affected: dc3c56b703dad4aec8a9b3dd86f03a90d0c26a2d , < d2c7c90aca7b37f60f16b2bedcfeb16204f2f35d (git) Affected: dc3c56b703dad4aec8a9b3dd86f03a90d0c26a2d , < f7b6370d0fbee06a867037d675797a606cb62e57 (git) Affected: dc3c56b703dad4aec8a9b3dd86f03a90d0c26a2d , < c6a2dd4f2e4e6cbdfe7a1618160281af897b75db (git) Affected: dc3c56b703dad4aec8a9b3dd86f03a90d0c26a2d , < 7aa31ee9ec92915926e74731378c009c9cc04928 (git)
Linux	Linux	Affected: 3.3 Unaffected: 0 , < 3.3 (semver) Unaffected: 5.10.248 , ≤ 5.10.* (semver) Unaffected: 5.15.198 , ≤ 5.15.* (semver) Unaffected: 6.1.160 , ≤ 6.1.* (semver) Unaffected: 6.6.120 , ≤ 6.6.* (semver) Unaffected: 6.12.64 , ≤ 6.12.* (semver) Unaffected: 6.18.3 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix)
Siemens	SIMATIC S7-1500 CPU 1518-4 PN/DP MFP	Affected: V3.1.6 , < * (custom)
Siemens	SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP	Affected: V3.1.6 , < * (custom)
Siemens	SIPLUS S7-1500 CPU 1518-4 PN/DP MFP	Affected: V3.1.6 , < * (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-71114",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-10T20:41:15.646108Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-11T18:44:10.462Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "affected": [
          {
            "defaultStatus": "unknown",
            "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "*",
                "status": "affected",
                "version": "V3.1.6",
                "versionType": "custom"
              }
            ]
          },
          {
            "defaultStatus": "unknown",
            "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "*",
                "status": "affected",
                "version": "V3.1.6",
                "versionType": "custom"
              }
            ]
          },
          {
            "defaultStatus": "unknown",
            "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "*",
                "status": "affected",
                "version": "V3.1.6",
                "versionType": "custom"
              }
            ]
          },
          {
            "defaultStatus": "unknown",
            "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "*",
                "status": "affected",
                "version": "V3.1.6",
                "versionType": "custom"
              }
            ]
          },
          {
            "defaultStatus": "unknown",
            "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "*",
                "status": "affected",
                "version": "V3.1.6",
                "versionType": "custom"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-08T08:43:57.677Z",
          "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
          "shortName": "siemens-SADP"
        },
        "references": [
          {
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html"
          }
        ],
        "x_adpType": "supplier"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/watchdog/via_wdt.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "1d56025a3af50db0f3da2792f41eb9943eee5324",
              "status": "affected",
              "version": "dc3c56b703dad4aec8a9b3dd86f03a90d0c26a2d",
              "versionType": "git"
            },
            {
              "lessThan": "c7b986adc9e9336066350542ac5a2005d305ae78",
              "status": "affected",
              "version": "dc3c56b703dad4aec8a9b3dd86f03a90d0c26a2d",
              "versionType": "git"
            },
            {
              "lessThan": "47c910965c936724070d2a8094a4c3ed8f452856",
              "status": "affected",
              "version": "dc3c56b703dad4aec8a9b3dd86f03a90d0c26a2d",
              "versionType": "git"
            },
            {
              "lessThan": "d2c7c90aca7b37f60f16b2bedcfeb16204f2f35d",
              "status": "affected",
              "version": "dc3c56b703dad4aec8a9b3dd86f03a90d0c26a2d",
              "versionType": "git"
            },
            {
              "lessThan": "f7b6370d0fbee06a867037d675797a606cb62e57",
              "status": "affected",
              "version": "dc3c56b703dad4aec8a9b3dd86f03a90d0c26a2d",
              "versionType": "git"
            },
            {
              "lessThan": "c6a2dd4f2e4e6cbdfe7a1618160281af897b75db",
              "status": "affected",
              "version": "dc3c56b703dad4aec8a9b3dd86f03a90d0c26a2d",
              "versionType": "git"
            },
            {
              "lessThan": "7aa31ee9ec92915926e74731378c009c9cc04928",
              "status": "affected",
              "version": "dc3c56b703dad4aec8a9b3dd86f03a90d0c26a2d",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/watchdog/via_wdt.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.3"
            },
            {
              "lessThan": "3.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.248",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.198",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.120",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.64",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.248",
                  "versionStartIncluding": "3.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.198",
                  "versionStartIncluding": "3.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.160",
                  "versionStartIncluding": "3.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.120",
                  "versionStartIncluding": "3.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.64",
                  "versionStartIncluding": "3.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.3",
                  "versionStartIncluding": "3.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19",
                  "versionStartIncluding": "3.3",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvia_wdt: fix critical boot hang due to unnamed resource allocation\n\nThe VIA watchdog driver uses allocate_resource() to reserve a MMIO\nregion for the watchdog control register. However, the allocated\nresource was not given a name, which causes the kernel resource tree\nto contain an entry marked as \"\u003cBAD\u003e\" under /proc/iomem on x86\nplatforms.\n\nDuring boot, this unnamed resource can lead to a critical hang because\nsubsequent resource lookups and conflict checks fail to handle the\ninvalid entry properly."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:55:08.117Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/1d56025a3af50db0f3da2792f41eb9943eee5324"
        },
        {
          "url": "https://git.kernel.org/stable/c/c7b986adc9e9336066350542ac5a2005d305ae78"
        },
        {
          "url": "https://git.kernel.org/stable/c/47c910965c936724070d2a8094a4c3ed8f452856"
        },
        {
          "url": "https://git.kernel.org/stable/c/d2c7c90aca7b37f60f16b2bedcfeb16204f2f35d"
        },
        {
          "url": "https://git.kernel.org/stable/c/f7b6370d0fbee06a867037d675797a606cb62e57"
        },
        {
          "url": "https://git.kernel.org/stable/c/c6a2dd4f2e4e6cbdfe7a1618160281af897b75db"
        },
        {
          "url": "https://git.kernel.org/stable/c/7aa31ee9ec92915926e74731378c009c9cc04928"
        }
      ],
      "title": "via_wdt: fix critical boot hang due to unnamed resource allocation",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-71114",
    "datePublished": "2026-01-14T15:06:00.848Z",
    "dateReserved": "2026-01-13T15:30:19.653Z",
    "dateUpdated": "2026-09-08T08:43:57.677Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.