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

Exact source revision recorded 23 Oct 2026 15:48:27 UTC. It does not establish the source's current position. Latest evidence.

cve-program · CVE-2026-46174

Published

Linux

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "arch/x86/include/asm/msr-index.h",
                        "arch/x86/kernel/cpu/amd.c",
                        "tools/arch/x86/include/asm/msr-index.h"
                    ],
                    "versions": [
                        {
                            "version": "f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9",
                            "lessThan": "1e23b30a80b14e5764657401ee2cca030525ae8e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9",
                            "lessThan": "f5bc3aef7df46eaaf423d7413ab8833f704ae576",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9",
                            "lessThan": "251497955f2314cd39d43191e81c6151dead4c7b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9",
                            "lessThan": "ff6fc65b3bf73acc5ee71919154d830ad5431362",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9",
                            "lessThan": "9109489cc8c34e50d15575a3d1ff82af586bc1aa",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9",
                            "lessThan": "28f5ed477eef166d678d6966762cbc1de9b4f436",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9",
                            "lessThan": "1cd85a19748b2407830376a5cbae5c0f126016e5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9",
                            "lessThan": "c21b90f77687075115d989e53a8ec5e2bb427ab1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5abd1583e06b3963e5c9d915760367de86808b78",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4ba461d426490b6ed7e8298c4d3b7a13aa5d2686",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5a63725cd18fcee2af6ec46ccb856b64ad3077b4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3.16.58",
                            "lessThan": "3.17",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.4.144",
                            "lessThan": "4.5",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.9.102",
                            "lessThan": "4.10",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                }

Linux

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "arch/x86/include/asm/msr-index.h",
                        "arch/x86/kernel/cpu/amd.c",
                        "tools/arch/x86/include/asm/msr-index.h"
                    ],
                    "versions": [
                        {
                            "version": "4.14",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.14",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.256",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.207",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.173",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.139",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.88",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.30",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0.7",
                            "lessThanOrEqual": "7.0.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON

ChangeIntel

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Sources read 8 Nov 20:02 UTC · 275 of 275 readable · 273 fully read · documentation 469/469 current