github - ghsa-964p-9vqv-9rhv

GHSA-964P-9VQV-9RHV

Vulnerability from github – Published: 2025-08-16 12:30 – Updated: 2025-11-19 00:31

Details

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

x86/CPU/AMD: Disable INVLPGB on Zen2

AMD Cyan Skillfish (Family 17h, Model 47h, Stepping 0h) has an issue that causes system oopses and panics when performing TLB flush using INVLPGB.

However, the problem is that that machine has misconfigured CPUID and should not report the INVLPGB bit in the first place. So zap the kernel's representation of the flag so that nothing gets confused.

[ bp: Massage. ]

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-2025-38518"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-08-16T11:15:45Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/CPU/AMD: Disable INVLPGB on Zen2\n\nAMD Cyan Skillfish (Family 17h, Model 47h, Stepping 0h) has an issue\nthat causes system oopses and panics when performing TLB flush using\nINVLPGB.\n\nHowever, the problem is that that machine has misconfigured CPUID and\nshould not report the INVLPGB bit in the first place. So zap the\nkernel\u0027s representation of the flag so that nothing gets confused.\n\n  [ bp: Massage. ]",
  "id": "GHSA-964p-9vqv-9rhv",
  "modified": "2025-11-19T00:31:23Z",
  "published": "2025-08-16T12:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38518"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/357f121517924e3ec3021f9d0dd0189adcd09867"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a74bb5f202dabddfea96abc1328fcedae8aa140a"
    }
  ],
  "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-2025-38518 (GCVE-0-2025-38518)

Vulnerability from cvelistv5 – Published: 2025-08-16 10:55 – Updated: 2025-08-16 10:55

Title

x86/CPU/AMD: Disable INVLPGB on Zen2

Summary

In the Linux kernel, the following vulnerability has been resolved: x86/CPU/AMD: Disable INVLPGB on Zen2 AMD Cyan Skillfish (Family 17h, Model 47h, Stepping 0h) has an issue that causes system oopses and panics when performing TLB flush using INVLPGB. However, the problem is that that machine has misconfigured CPUID and should not report the INVLPGB bit in the first place. So zap the kernel's representation of the flag so that nothing gets confused. [ bp: Massage. ]

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/357f121517924e3ec…
	https://git.kernel.org/stable/c/a74bb5f202dabddfe…

Impacted products

Vendor

Product

Version

Linux

Affected: 767ae437a32d644786c0779d0d54492ff9cbe574 , < 357f121517924e3ec3021f9d0dd0189adcd09867 (git)
Affected: 767ae437a32d644786c0779d0d54492ff9cbe574 , < a74bb5f202dabddfea96abc1328fcedae8aa140a (git)

Linux

Affected: 6.15
Unaffected: 0 , < 6.15 (semver)
Unaffected: 6.15.7 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)

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JSON

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  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/x86/kernel/cpu/amd.c"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "357f121517924e3ec3021f9d0dd0189adcd09867",
              "status": "affected",
              "version": "767ae437a32d644786c0779d0d54492ff9cbe574",
              "versionType": "git"
            },
            {
              "lessThan": "a74bb5f202dabddfea96abc1328fcedae8aa140a",
              "status": "affected",
              "version": "767ae437a32d644786c0779d0d54492ff9cbe574",
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          ],
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "lessThan": "6.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
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              "version": "6.15.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
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        }
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/CPU/AMD: Disable INVLPGB on Zen2\n\nAMD Cyan Skillfish (Family 17h, Model 47h, Stepping 0h) has an issue\nthat causes system oopses and panics when performing TLB flush using\nINVLPGB.\n\nHowever, the problem is that that machine has misconfigured CPUID and\nshould not report the INVLPGB bit in the first place. So zap the\nkernel\u0027s representation of the flag so that nothing gets confused.\n\n  [ bp: Massage. ]"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-08-16T10:55:05.039Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/357f121517924e3ec3021f9d0dd0189adcd09867"
        },
        {
          "url": "https://git.kernel.org/stable/c/a74bb5f202dabddfea96abc1328fcedae8aa140a"
        }
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        "engine": "bippy-1.2.0"
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38518",
    "datePublished": "2025-08-16T10:55:05.039Z",
    "dateReserved": "2025-04-16T04:51:24.023Z",
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  },
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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-964P-9VQV-9RHV

CVE-2025-38518 (GCVE-0-2025-38518)

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Sightings

Nomenclature