Vulnerability-Lookup

GHSA-XGQ6-GG2M-2X7G

Vulnerability from github – Published: 2026-05-28 12:30 – Updated: 2026-05-28 12:30

Details

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

x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache

Make sure resources are not improperly shared in the op cache and cause instruction corruption this way.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-46174"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-28T10:16:33Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/CPU/AMD: Prevent improper isolation of shared resources in Zen2\u0027s op cache\n\nMake sure resources are not improperly shared in the op cache and\ncause instruction corruption this way.",
  "id": "GHSA-xgq6-gg2m-2x7g",
  "modified": "2026-05-28T12:30:31Z",
  "published": "2026-05-28T12:30:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46174"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1cd85a19748b2407830376a5cbae5c0f126016e5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1e23b30a80b14e5764657401ee2cca030525ae8e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/251497955f2314cd39d43191e81c6151dead4c7b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/28f5ed477eef166d678d6966762cbc1de9b4f436"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9109489cc8c34e50d15575a3d1ff82af586bc1aa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c21b90f77687075115d989e53a8ec5e2bb427ab1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f5bc3aef7df46eaaf423d7413ab8833f704ae576"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ff6fc65b3bf73acc5ee71919154d830ad5431362"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-46174 (GCVE-0-2026-46174)

Vulnerability from cvelistv5 – Published: 2026-05-28 09:36 – Updated: 2026-05-28 09:36

Title

x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache

Summary

In the Linux kernel, the following vulnerability has been resolved: x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache Make sure resources are not improperly shared in the op cache and cause instruction corruption this way.

Severity

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/1e23b30a80b14e576…
https://git.kernel.org/stable/c/f5bc3aef7df46eaaf…
https://git.kernel.org/stable/c/251497955f2314cd3…
https://git.kernel.org/stable/c/ff6fc65b3bf73acc5…
https://git.kernel.org/stable/c/9109489cc8c34e50d…
https://git.kernel.org/stable/c/28f5ed477eef166d6…
https://git.kernel.org/stable/c/1cd85a19748b24078…
https://git.kernel.org/stable/c/c21b90f7768707511…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 1e23b30a80b14e5764657401ee2cca030525ae8e (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f5bc3aef7df46eaaf423d7413ab8833f704ae576 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 251497955f2314cd39d43191e81c6151dead4c7b (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < ff6fc65b3bf73acc5ee71919154d830ad5431362 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 9109489cc8c34e50d15575a3d1ff82af586bc1aa (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 28f5ed477eef166d678d6966762cbc1de9b4f436 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 1cd85a19748b2407830376a5cbae5c0f126016e5 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < c21b90f77687075115d989e53a8ec5e2bb427ab1 (git) Affected: 0 , < 5.10.256 (semver) Affected: 0 , < 5.15.207 (semver) Affected: 0 , < 6.1.173 (semver) Affected: 0 , < 6.6.139 (semver) Affected: 0 , < 6.12.88 (semver) Affected: 0 , < 6.18.30 (semver) Affected: 0 , < 7.0.7 (semver)
Linux	Linux	Unaffected: 5.10.256 , ≤ 5.10.* (semver) Unaffected: 5.15.207 , ≤ 5.15.* (semver) Unaffected: 6.1.173 , ≤ 6.1.* (semver) Unaffected: 6.6.139 , ≤ 6.6.* (semver) Unaffected: 6.12.88 , ≤ 6.12.* (semver) Unaffected: 6.18.30 , ≤ 6.18.* (semver) Unaffected: 7.0.7 , ≤ 7.0.* (semver) Unaffected: 7.1-rc4 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/x86/include/asm/msr-index.h",
            "arch/x86/kernel/cpu/amd.c",
            "tools/arch/x86/include/asm/msr-index.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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            },
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            {
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            },
            {
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              "status": "affected",
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            {
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              "status": "affected",
              "version": "0",
              "versionType": "semver"
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              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
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              "status": "affected",
              "version": "0",
              "versionType": "semver"
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            {
              "lessThan": "6.12.88",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "6.18.30",
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              "version": "0",
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            },
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              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        },
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          "product": "Linux",
          "programFiles": [
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            "arch/x86/kernel/cpu/amd.c",
            "tools/arch/x86/include/asm/msr-index.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.256",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.207",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.173",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.139",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.88",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.30",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1-rc4",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.256",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.207",
                  "vulnerable": true
                },
                {
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                },
                {
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      "providerMetadata": {
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    "datePublished": "2026-05-28T09:36:28.703Z",
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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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-XGQ6-GG2M-2X7G

CVE-2026-46174 (GCVE-0-2026-46174)

Tags

Sightings

Nomenclature