x86/CPU/AMD: Fix AMD TLBI Erratum #1718

{
  "id": "d85acfe71d1079459a2012180f8f006cb7d31a7ad064c31f1480ae659fd9e617",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-99099",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "x86/CPU/AMD: Fix AMD TLBI Erratum #1718",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: x86/CPU/AMD: Fix AMD TLBI Erratum #1718 The processor may fail to invalidate a TLB entry while executing an INVLPGB/TLBSYNC instruction pair. Detect the erratum and apply a software workaround when a microcode fix is not present.",
    "evidence": "cve:CVE-2026-99099",
    "products": [
      {
        "name": {
          "value": "Linux",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      },
      {
        "name": {
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          "evidence": "/containers/cna/affected/1/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-99099",
      "aliases": [
        "CVE-2026-99099"
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      "metrics": [],
      "affected": [
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
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          ],
          "programFiles": [
            "arch/x86/include/asm/cpufeatures.h",
            "arch/x86/include/asm/tlb.h",
            "arch/x86/kernel/cpu/amd.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
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              "version": "6.15"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.15",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.18.57",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.11",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
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          ],
          "programFiles": [
            "arch/x86/include/asm/cpufeatures.h",
            "arch/x86/include/asm/tlb.h",
            "arch/x86/kernel/cpu/amd.c"
          ],
          "defaultStatus": "affected"
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      ],
      "modified": "2026-10-26T14:52:04.997Z",
      "provider": "cve",
      "references": [
        "https://git.kernel.org/stable/c/e3e6779f77ab6f0a1aa80e24868d2d89f31053fe",
        "https://git.kernel.org/stable/c/098d80b04d0fe02889c332d061db968f070b83a6",
        "https://git.kernel.org/stable/c/87db7795cbaaf636ae22ae031f4906db7bb77803"
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      "provider_metadata": {
        "cna": {
          "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "shortName": "Linux",
          "dateUpdated": "2026-10-26T14:52:04.997Z"
        }
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    },
    "related_cves": [
      {
        "value": "CVE-2026-99099",
        "evidence": "/cveMetadata/cveId"
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    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-cve",
  "document_id": 311614,
  "published_at": "2026-10-26T14:52:04.997+00:00"
}