github - ghsa-vwg2-4h4c-ch44

ghsa-vwg2-4h4c-ch44

Vulnerability from github

Published

2025-03-14 21:31

Modified

2025-03-14 21:31

Severity ?

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

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

clk: Fix clk_hw_get_clk() when dev is NULL

Any registered clk_core structure can have a NULL pointer in its dev field. While never actually documented, this is evidenced by the wide usage of clk_register and clk_hw_register with a NULL device pointer, and the fact that the core of_clk_hw_register() function also passes a NULL device pointer.

A call to clk_hw_get_clk() on a clk_hw struct whose clk_core is in that case will result in a NULL pointer derefence when it calls dev_name() on that NULL device pointer.

Add a test for this case and use NULL as the dev_id if the device pointer is NULL.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49187"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:00:55Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nclk: Fix clk_hw_get_clk() when dev is NULL\n\nAny registered clk_core structure can have a NULL pointer in its dev\nfield. While never actually documented, this is evidenced by the wide\nusage of clk_register and clk_hw_register with a NULL device pointer,\nand the fact that the core of_clk_hw_register() function also passes a\nNULL device pointer.\n\nA call to clk_hw_get_clk() on a clk_hw struct whose clk_core is in that\ncase will result in a NULL pointer derefence when it calls dev_name() on\nthat NULL device pointer.\n\nAdd a test for this case and use NULL as the dev_id if the device\npointer is NULL.",
  "id": "GHSA-vwg2-4h4c-ch44",
  "modified": "2025-03-14T21:31:40Z",
  "published": "2025-03-14T21:31:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49187"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0c1b56df451716ba207bbf59f303473643eee4fd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/23f89fe005b105f0dcc55034c13eb89f9b570fac"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4be3e4c05d8dd1b83b75652cad88c9e752ec7054"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d183f20cf5a7b546d4108e796b98210ceb317579"
    }
  ],
  "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-2022-49187 (GCVE-0-2022-49187)

Vulnerability from cvelistv5

Published

2025-02-26 01:55

Modified

2025-05-04 08:31

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: clk: Fix clk_hw_get_clk() when dev is NULL Any registered clk_core structure can have a NULL pointer in its dev field. While never actually documented, this is evidenced by the wide usage of clk_register and clk_hw_register with a NULL device pointer, and the fact that the core of_clk_hw_register() function also passes a NULL device pointer. A call to clk_hw_get_clk() on a clk_hw struct whose clk_core is in that case will result in a NULL pointer derefence when it calls dev_name() on that NULL device pointer. Add a test for this case and use NULL as the dev_id if the device pointer is NULL.

References

▼	URL	Tags
	https://git.kernel.org/stable/c/4be3e4c05d8dd1b83b75652cad88c9e752ec7054
	https://git.kernel.org/stable/c/d183f20cf5a7b546d4108e796b98210ceb317579
	https://git.kernel.org/stable/c/23f89fe005b105f0dcc55034c13eb89f9b570fac
	https://git.kernel.org/stable/c/0c1b56df451716ba207bbf59f303473643eee4fd

Impacted products

Vendor

Product

Version

▼

Linux

Version: 30d6f8c15d2cd877c1f3d47d8a1064649ebe58e2
Version: 30d6f8c15d2cd877c1f3d47d8a1064649ebe58e2
Version: 30d6f8c15d2cd877c1f3d47d8a1064649ebe58e2
Version: 30d6f8c15d2cd877c1f3d47d8a1064649ebe58e2

Linux

Version: 5.11

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/clk/clk.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "4be3e4c05d8dd1b83b75652cad88c9e752ec7054",
              "status": "affected",
              "version": "30d6f8c15d2cd877c1f3d47d8a1064649ebe58e2",
              "versionType": "git"
            },
            {
              "lessThan": "d183f20cf5a7b546d4108e796b98210ceb317579",
              "status": "affected",
              "version": "30d6f8c15d2cd877c1f3d47d8a1064649ebe58e2",
              "versionType": "git"
            },
            {
              "lessThan": "23f89fe005b105f0dcc55034c13eb89f9b570fac",
              "status": "affected",
              "version": "30d6f8c15d2cd877c1f3d47d8a1064649ebe58e2",
              "versionType": "git"
            },
            {
              "lessThan": "0c1b56df451716ba207bbf59f303473643eee4fd",
              "status": "affected",
              "version": "30d6f8c15d2cd877c1f3d47d8a1064649ebe58e2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/clk/clk.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.11"
            },
            {
              "lessThan": "5.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.33",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.16.*",
              "status": "unaffected",
              "version": "5.16.19",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.17.*",
              "status": "unaffected",
              "version": "5.17.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.33",
                  "versionStartIncluding": "5.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.16.19",
                  "versionStartIncluding": "5.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.17.2",
                  "versionStartIncluding": "5.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.18",
                  "versionStartIncluding": "5.11",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nclk: Fix clk_hw_get_clk() when dev is NULL\n\nAny registered clk_core structure can have a NULL pointer in its dev\nfield. While never actually documented, this is evidenced by the wide\nusage of clk_register and clk_hw_register with a NULL device pointer,\nand the fact that the core of_clk_hw_register() function also passes a\nNULL device pointer.\n\nA call to clk_hw_get_clk() on a clk_hw struct whose clk_core is in that\ncase will result in a NULL pointer derefence when it calls dev_name() on\nthat NULL device pointer.\n\nAdd a test for this case and use NULL as the dev_id if the device\npointer is NULL."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T08:31:51.828Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/4be3e4c05d8dd1b83b75652cad88c9e752ec7054"
        },
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          "url": "https://git.kernel.org/stable/c/d183f20cf5a7b546d4108e796b98210ceb317579"
        },
        {
          "url": "https://git.kernel.org/stable/c/23f89fe005b105f0dcc55034c13eb89f9b570fac"
        },
        {
          "url": "https://git.kernel.org/stable/c/0c1b56df451716ba207bbf59f303473643eee4fd"
        }
      ],
      "title": "clk: Fix clk_hw_get_clk() when dev is NULL",
      "x_generator": {
        "engine": "bippy-1.2.0"
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    }
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49187",
    "datePublished": "2025-02-26T01:55:36.094Z",
    "dateReserved": "2025-02-26T01:49:39.286Z",
    "dateUpdated": "2025-05-04T08:31:51.828Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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