Vulnerability-Lookup

GHSA-VWG2-4H4C-CH44

Vulnerability from github – Published: 2025-03-14 21:31 – Updated: 2025-03-14 21:31

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.

Severity

5.5 (Medium)


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

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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 – Updated: 2026-05-11 18:54

Title

clk: Fix clk_hw_get_clk() when dev is NULL

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.

Severity

5.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-10-01 19:47 UTC

CWE

CWE-476 - NULL Pointer Dereference

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6996 records in the last 180 days details

References

4 references

URL	Tags
https://git.kernel.org/stable/c/4be3e4c05d8dd1b83…
https://git.kernel.org/stable/c/d183f20cf5a7b546d…
https://git.kernel.org/stable/c/23f89fe005b105f0d…
https://git.kernel.org/stable/c/0c1b56df451716ba2…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 30d6f8c15d2cd877c1f3d47d8a1064649ebe58e2 , < 4be3e4c05d8dd1b83b75652cad88c9e752ec7054 (git) Affected: 30d6f8c15d2cd877c1f3d47d8a1064649ebe58e2 , < d183f20cf5a7b546d4108e796b98210ceb317579 (git) Affected: 30d6f8c15d2cd877c1f3d47d8a1064649ebe58e2 , < 23f89fe005b105f0dcc55034c13eb89f9b570fac (git) Affected: 30d6f8c15d2cd877c1f3d47d8a1064649ebe58e2 , < 0c1b56df451716ba207bbf59f303473643eee4fd (git)
Linux	Linux	Affected: 5.11 Unaffected: 0 , < 5.11 (semver) Unaffected: 5.15.33 , ≤ 5.15.* (semver) Unaffected: 5.16.19 , ≤ 5.16.* (semver) Unaffected: 5.17.2 , ≤ 5.17.* (semver) Unaffected: 5.18 , ≤ * (original_commit_for_fix)

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    "adp": [
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        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
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      "affected": [
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          "product": "Linux",
          "programFiles": [
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          "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."
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    "dateReserved": "2025-02-26T01:49:39.286Z",
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}

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.

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