{"id":"CVE-2026-46174","revision":null,"records":[{"revision":"449b65f715c946b19ed6aaac9ccd835f","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-46174","aliases":[],"title":"x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nx86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache\n\nMake sure resources are not improperly shared in the op cache and\ncause instruction corruption this way.","state":0,"publishedAt":"2026-05-28T09:36:28.703+00:00","modifiedAt":"2026-10-19T19:36:53.596+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"arch/x86/include/asm/msr-index.h\",\n \"arch/x86/kernel/cpu/amd.c\",\n \"tools/arch/x86/include/asm/msr-index.h\"\n ],\n \"versions\": [\n {\n \"version\": \"f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9\",\n \"lessThan\": \"1e23b30a80b14e5764657401ee2cca030525ae8e\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9\",\n \"lessThan\": \"f5bc3aef7df46eaaf423d7413ab8833f704ae576\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9\",\n \"lessThan\": \"251497955f2314cd39d43191e81c6151dead4c7b\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9\",\n \"lessThan\": \"ff6fc65b3bf73acc5ee71919154d830ad5431362\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9\",\n \"lessThan\": \"9109489cc8c34e50d15575a3d1ff82af586bc1aa\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9\",\n \"lessThan\": \"28f5ed477eef166d678d6966762cbc1de9b4f436\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9\",\n \"lessThan\": \"1cd85a19748b2407830376a5cbae5c0f126016e5\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9\",\n \"lessThan\": \"c21b90f77687075115d989e53a8ec5e2bb427ab1\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"5abd1583e06b3963e5c9d915760367de86808b78\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"4ba461d426490b6ed7e8298c4d3b7a13aa5d2686\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"5a63725cd18fcee2af6ec46ccb856b64ad3077b4\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"3.16.58\",\n \"lessThan\": \"3.17\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.4.144\",\n \"lessThan\": \"4.5\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.9.102\",\n \"lessThan\": \"4.10\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"arch/x86/include/asm/msr-index.h\",\n \"arch/x86/kernel/cpu/amd.c\",\n \"tools/arch/x86/include/asm/msr-index.h\"\n ],\n \"versions\": [\n {\n \"version\": \"4.14\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"4.14\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.256\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.207\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.173\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.139\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.88\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.30\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.0.7\",\n \"lessThanOrEqual\": \"7.0.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.1\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","score":8.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/1e23b30a80b14e5764657401ee2cca030525ae8e","https://git.kernel.org/stable/c/f5bc3aef7df46eaaf423d7413ab8833f704ae576","https://git.kernel.org/stable/c/251497955f2314cd39d43191e81c6151dead4c7b","https://git.kernel.org/stable/c/ff6fc65b3bf73acc5ee71919154d830ad5431362","https://git.kernel.org/stable/c/9109489cc8c34e50d15575a3d1ff82af586bc1aa","https://git.kernel.org/stable/c/28f5ed477eef166d678d6966762cbc1de9b4f436","https://git.kernel.org/stable/c/1cd85a19748b2407830376a5cbae5c0f126016e5","https://git.kernel.org/stable/c/c21b90f77687075115d989e53a8ec5e2bb427ab1"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-46174","license":"CVE Program Terms of 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