Vulnerability-Lookup

GHSA-28G4-W6X4-J3W5

Vulnerability from github – Published: 2026-11-03 12:31 – Updated: 2026-11-03 12:31

Details

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

gpio: shared: gracefully handle no-device lookup of shared GPIOs

We use platform lookup tables for shared GPIOs. This mechanism needs a struct device to work so fwnode-based lookup with no device associated currently causes a NULL-pointer deference.

Adding this functionality will require a larger rework and it has never worked anyway so add a check that allows the kernel to gracefully handle this situation with an error ahead of implementing that functionality as a new feature.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-99257"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-11-03T12:17:32Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: shared: gracefully handle no-device lookup of shared GPIOs\n\nWe use platform lookup tables for shared GPIOs. This mechanism needs a\nstruct device to work so fwnode-based lookup with no device associated\ncurrently causes a NULL-pointer deference.\n\nAdding this functionality will require a larger rework and it has never\nworked anyway so add a check that allows the kernel to gracefully handle\nthis situation with an error ahead of implementing that functionality as\na new feature.",
  "id": "GHSA-28g4-w6x4-j3w5",
  "modified": "2026-11-03T12:31:50Z",
  "published": "2026-11-03T12:31:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-99257"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7f9eb6aaf9a3ab7fa2b7dcc38660c27db12d4ec1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cf73c3fc03c43a8a86fd487c62390b4744eff9ec"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-99257 (GCVE-0-2026-99257)

Vulnerability from cvelistv5 – Published: 2026-11-03 11:25 – Updated: 2026-11-03 11:40

Title

gpio: shared: gracefully handle no-device lookup of shared GPIOs

Summary

In the Linux kernel, the following vulnerability has been resolved: gpio: shared: gracefully handle no-device lookup of shared GPIOs We use platform lookup tables for shared GPIOs. This mechanism needs a struct device to work so fwnode-based lookup with no device associated currently causes a NULL-pointer deference. Adding this functionality will require a larger rework and it has never worked anyway so add a check that allows the kernel to gracefully handle this situation with an error ahead of implementing that functionality as a new feature.

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6637 records in the last 180 days details

References

2 references

URL	Tags
https://git.kernel.org/stable/c/7f9eb6aaf9a3ab7fa…
https://git.kernel.org/stable/c/cf73c3fc03c43a8a8…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: a060b8c511abb0997381b397e52149a5e3e5259a , < 7f9eb6aaf9a3ab7fa2b7dcc38660c27db12d4ec1 (git) Affected: a060b8c511abb0997381b397e52149a5e3e5259a , < cf73c3fc03c43a8a86fd487c62390b4744eff9ec (git)
Linux	Linux	Affected: 6.19 Unaffected: 0 , < 6.19 (semver) Unaffected: 7.2.13 , ≤ 7.2.* (semver) Unaffected: 7.3 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpio/gpiolib-shared.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "7f9eb6aaf9a3ab7fa2b7dcc38660c27db12d4ec1",
              "status": "affected",
              "version": "a060b8c511abb0997381b397e52149a5e3e5259a",
              "versionType": "git"
            },
            {
              "lessThan": "cf73c3fc03c43a8a86fd487c62390b4744eff9ec",
              "status": "affected",
              "version": "a060b8c511abb0997381b397e52149a5e3e5259a",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpio/gpiolib-shared.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.19"
            },
            {
              "lessThan": "6.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.13",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: shared: gracefully handle no-device lookup of shared GPIOs\n\nWe use platform lookup tables for shared GPIOs. This mechanism needs a\nstruct device to work so fwnode-based lookup with no device associated\ncurrently causes a NULL-pointer deference.\n\nAdding this functionality will require a larger rework and it has never\nworked anyway so add a check that allows the kernel to gracefully handle\nthis situation with an error ahead of implementing that functionality as\na new feature."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-11-03T11:40:45.753Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/7f9eb6aaf9a3ab7fa2b7dcc38660c27db12d4ec1"
        },
        {
          "url": "https://git.kernel.org/stable/c/cf73c3fc03c43a8a86fd487c62390b4744eff9ec"
        }
      ],
      "title": "gpio: shared: gracefully handle no-device lookup of shared GPIOs",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-99257",
    "datePublished": "2026-11-03T11:25:14.374Z",
    "dateReserved": "2026-09-25T10:25:14.404Z",
    "dateUpdated": "2026-11-03T11:40:45.753Z",
    "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.

Vulnerability timeline

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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.
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