github - ghsa-2rff-fcfm-wv2q

GHSA-2RFF-FCFM-WV2Q

Vulnerability from github – Published: 2025-09-05 18:31 – Updated: 2025-11-26 00:30

Details

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

net: ftgmac100: fix potential NULL pointer access in ftgmac100_phy_disconnect

After the call to phy_disconnect() netdev->phydev is reset to NULL. So fixed_phy_unregister() would be called with a NULL pointer as argument. Therefore cache the phy_device before this call.

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-2025-38726"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-04T16:15:42Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ftgmac100: fix potential NULL pointer access in ftgmac100_phy_disconnect\n\nAfter the call to phy_disconnect() netdev-\u003ephydev is reset to NULL.\nSo fixed_phy_unregister() would be called with a NULL pointer as argument.\nTherefore cache the phy_device before this call.",
  "id": "GHSA-2rff-fcfm-wv2q",
  "modified": "2025-11-26T00:30:16Z",
  "published": "2025-09-05T18:31:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38726"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/44bcd397ad9cd1a6b25fabb7f5edbee4fb0cfc2e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9ad90dd34b4e8e5be1e45a4559f4de0f14e53af2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ae59ec969c07c73f0610f8bd7e648f01e798d222"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e88fbc30dda1cb7438515303704ceddb3ade4ecd"
    }
  ],
  "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-2025-38726 (GCVE-0-2025-38726)

Vulnerability from cvelistv5 – Published: 2025-09-04 15:33 – Updated: 2025-09-29 05:56

Summary

In the Linux kernel, the following vulnerability has been resolved: net: ftgmac100: fix potential NULL pointer access in ftgmac100_phy_disconnect After the call to phy_disconnect() netdev->phydev is reset to NULL. So fixed_phy_unregister() would be called with a NULL pointer as argument. Therefore cache the phy_device before this call.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/ae59ec969c07c73f0…
	https://git.kernel.org/stable/c/44bcd397ad9cd1a6b…
	https://git.kernel.org/stable/c/9ad90dd34b4e8e5be…
	https://git.kernel.org/stable/c/e88fbc30dda1cb743…

Impacted products

Vendor

Product

Version

Linux

Affected: e24a6c874601efb3de6e535895dd8e4f56fa98f1 , < ae59ec969c07c73f0610f8bd7e648f01e798d222 (git)
Affected: e24a6c874601efb3de6e535895dd8e4f56fa98f1 , < 44bcd397ad9cd1a6b25fabb7f5edbee4fb0cfc2e (git)
Affected: e24a6c874601efb3de6e535895dd8e4f56fa98f1 , < 9ad90dd34b4e8e5be1e45a4559f4de0f14e53af2 (git)
Affected: e24a6c874601efb3de6e535895dd8e4f56fa98f1 , < e88fbc30dda1cb7438515303704ceddb3ade4ecd (git)

Linux

Affected: 6.12
Unaffected: 0 , < 6.12 (semver)
Unaffected: 6.12.43 , ≤ 6.12.* (semver)
Unaffected: 6.15.11 , ≤ 6.15.* (semver)
Unaffected: 6.16.2 , ≤ 6.16.* (semver)
Unaffected: 6.17 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/faraday/ftgmac100.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ae59ec969c07c73f0610f8bd7e648f01e798d222",
              "status": "affected",
              "version": "e24a6c874601efb3de6e535895dd8e4f56fa98f1",
              "versionType": "git"
            },
            {
              "lessThan": "44bcd397ad9cd1a6b25fabb7f5edbee4fb0cfc2e",
              "status": "affected",
              "version": "e24a6c874601efb3de6e535895dd8e4f56fa98f1",
              "versionType": "git"
            },
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              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/faraday/ftgmac100.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.12"
            },
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.43",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.16.*",
              "status": "unaffected",
              "version": "6.16.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.17",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.43",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                },
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                  "vulnerable": true
                }
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              "negate": false,
              "operator": "OR"
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        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ftgmac100: fix potential NULL pointer access in ftgmac100_phy_disconnect\n\nAfter the call to phy_disconnect() netdev-\u003ephydev is reset to NULL.\nSo fixed_phy_unregister() would be called with a NULL pointer as argument.\nTherefore cache the phy_device before this call."
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      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-29T05:56:52.401Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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        {
          "url": "https://git.kernel.org/stable/c/e88fbc30dda1cb7438515303704ceddb3ade4ecd"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38726",
    "datePublished": "2025-09-04T15:33:24.527Z",
    "dateReserved": "2025-04-16T04:51:24.033Z",
    "dateUpdated": "2025-09-29T05:56:52.401Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-2RFF-FCFM-WV2Q

CVE-2025-38726 (GCVE-0-2025-38726)

Tags

Sightings

Nomenclature