github - ghsa-mxc4-v7c2-8m69

GHSA-MXC4-V7C2-8M69

Vulnerability from github – Published: 2025-07-25 15:30 – Updated: 2025-11-19 21:31

Details

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

platform/x86/amd: pmf: Use device managed allocations

If setting up smart PC fails for any reason then this can lead to a double free when unloading amd-pmf. This is because dev->buf was freed but never set to NULL and is again freed in amd_pmf_remove().

To avoid subtle allocation bugs in failures leading to a double free change all allocations into device managed allocations.

Severity ?

7.8 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2025-38421"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-415"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-25T15:15:26Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86/amd: pmf: Use device managed allocations\n\nIf setting up smart PC fails for any reason then this can lead to\na double free when unloading amd-pmf.  This is because dev-\u003ebuf was\nfreed but never set to NULL and is again freed in amd_pmf_remove().\n\nTo avoid subtle allocation bugs in failures leading to a double free\nchange all allocations into device managed allocations.",
  "id": "GHSA-mxc4-v7c2-8m69",
  "modified": "2025-11-19T21:31:16Z",
  "published": "2025-07-25T15:30:54Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38421"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0d10b532f861253c283863522d59d099fcb0796d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d9db3a941270d92bbd1a6a6b54a10324484f2f2d"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-38421 (GCVE-0-2025-38421)

Vulnerability from cvelistv5 – Published: 2025-07-25 14:16 – Updated: 2025-07-28 04:21

Summary

In the Linux kernel, the following vulnerability has been resolved: platform/x86/amd: pmf: Use device managed allocations If setting up smart PC fails for any reason then this can lead to a double free when unloading amd-pmf. This is because dev->buf was freed but never set to NULL and is again freed in amd_pmf_remove(). To avoid subtle allocation bugs in failures leading to a double free change all allocations into device managed allocations.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/0d10b532f861253c2…
	https://git.kernel.org/stable/c/d9db3a941270d92bb…

Impacted products

Vendor

Product

Version

Linux

Affected: 5b1122fc4995f308b21d7cfc64ef9880ac834d20 , < 0d10b532f861253c283863522d59d099fcb0796d (git)
Affected: 5b1122fc4995f308b21d7cfc64ef9880ac834d20 , < d9db3a941270d92bbd1a6a6b54a10324484f2f2d (git)
Affected: e70b4b8f93d7fcf8ee063a1d1f18782c4da3d335 (git)
Affected: 3ed60e51ffdbfef14169bd967e21a6ba5e5ff42b (git)

Linux

Affected: 6.14
Unaffected: 0 , < 6.14 (semver)
Unaffected: 6.15.4 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/platform/x86/amd/pmf/core.c",
            "drivers/platform/x86/amd/pmf/tee-if.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "0d10b532f861253c283863522d59d099fcb0796d",
              "status": "affected",
              "version": "5b1122fc4995f308b21d7cfc64ef9880ac834d20",
              "versionType": "git"
            },
            {
              "lessThan": "d9db3a941270d92bbd1a6a6b54a10324484f2f2d",
              "status": "affected",
              "version": "5b1122fc4995f308b21d7cfc64ef9880ac834d20",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "e70b4b8f93d7fcf8ee063a1d1f18782c4da3d335",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "3ed60e51ffdbfef14169bd967e21a6ba5e5ff42b",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/platform/x86/amd/pmf/core.c",
            "drivers/platform/x86/amd/pmf/tee-if.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.14"
            },
            {
              "lessThan": "6.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15.4",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.12.23",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.13.11",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86/amd: pmf: Use device managed allocations\n\nIf setting up smart PC fails for any reason then this can lead to\na double free when unloading amd-pmf.  This is because dev-\u003ebuf was\nfreed but never set to NULL and is again freed in amd_pmf_remove().\n\nTo avoid subtle allocation bugs in failures leading to a double free\nchange all allocations into device managed allocations."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-28T04:21:43.366Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
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          "url": "https://git.kernel.org/stable/c/0d10b532f861253c283863522d59d099fcb0796d"
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        {
          "url": "https://git.kernel.org/stable/c/d9db3a941270d92bbd1a6a6b54a10324484f2f2d"
        }
      ],
      "title": "platform/x86/amd: pmf: Use device managed allocations",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38421",
    "datePublished": "2025-07-25T14:16:42.409Z",
    "dateReserved": "2025-04-16T04:51:24.014Z",
    "dateUpdated": "2025-07-28T04:21:43.366Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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}

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-MXC4-V7C2-8M69

CVE-2025-38421 (GCVE-0-2025-38421)

Tags

Sightings

Nomenclature