gpiolib: Fix crash on error in gpiochip_get_ngpios()

{
  "id": "188516e6e37e1f0c93a25a9faf6b842680b9bdaa7b4c37d187b0cb8d70121d87",
  "url": "https://osv.dev/vulnerability/CVE-2025-21783",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "gpiolib: Fix crash on error in gpiochip_get_ngpios()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: gpiolib: Fix crash on error in gpiochip_get_ngpios() The gpiochip_get_ngpios() uses chip_*() macros to print messages. However these macros rely on gpiodev to be initialised and set, which is not the case when called via bgpio_init(). In such a case the printing messages will crash on NULL pointer dereference. Replace chip_*() macros by the respective dev_*() ones to avoid such crash.",
    "evidence": "osv:CVE-2025-21783",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.6.79",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.16",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.13.4",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2025-21783",
      "aliases": [
        "CVE-2025-21783"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "55b2395e4e92adc492c6b30ac109eb78250dcd9d"
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                  "fixed": "4d9b2b62e1136d10f661ec4c0c268140b6f74f4f"
                },
                {
                  "fixed": "a7052afa9eae2239e25943baa8817a6a56e8aa68"
                },
                {
                  "fixed": "189fb76215e479c10731baabb50f1a352d2078f5"
                },
                {
                  "fixed": "7b4aebeecbbd5b5fe73e35fad3f62ed21aa7ef44"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-21783.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.6.0"
                },
                {
                  "fixed": "6.6.79"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.16"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.13.4"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-21783.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:37.416810122Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/189fb76215e479c10731baabb50f1a352d2078f5",
        "https://git.kernel.org/stable/c/4d9b2b62e1136d10f661ec4c0c268140b6f74f4f",
        "https://git.kernel.org/stable/c/7b4aebeecbbd5b5fe73e35fad3f62ed21aa7ef44",
        "https://git.kernel.org/stable/c/a7052afa9eae2239e25943baa8817a6a56e8aa68",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21783.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-21783",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21783.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-21783",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 504602,
  "published_at": "2025-02-27T02:18:24.98+00:00"
}