{"id":"CVE-2026-46174","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:\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 corr…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 < 1e23b30a80b14e5764657401ee2cca030525ae8e","Linux >= f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 < f5bc3aef7df46eaaf423d7413ab8833f704ae576","Linux >= f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 < 251497955f2314cd39d43191e81c6151dead4c7b","Linux >= f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 < ff6fc65b3bf73acc5ee71919154d830ad5431362","Linux >= f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 < 9109489cc8c34e50d15575a3d1ff82af586bc1aa","Linux >= f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 < 28f5ed477eef166d678d6966762cbc1de9b4f436","Linux >= f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 < 1cd85a19748b2407830376a5cbae5c0f126016e5","Linux >= f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 < c21b90f77687075115d989e53a8ec5e2bb427ab1","Linux 5abd1583e06b3963e5c9d915760367de86808b78","Linux 4ba461d426490b6ed7e8298c4d3b7a13aa5d2686","Linux 5a63725cd18fcee2af6ec46ccb856b64ad3077b4","Linux >= 3.16.58 < 3.17","Linux >= 4.4.144 < 4.5","Linux >= 4.9.102 < 4.10","Linux 4.14"],"published":"2026-05-28","updated":"2026-09-08","sourceUpdated":"2026-09-08T08:49:23.340Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-46174","references":[{"url":"https://git.kernel.org/stable/c/1e23b30a80b14e5764657401ee2cca030525ae8e"},{"url":"https://git.kernel.org/stable/c/f5bc3aef7df46eaaf423d7413ab8833f704ae576"},{"url":"https://git.kernel.org/stable/c/251497955f2314cd39d43191e81c6151dead4c7b"},{"url":"https://git.kernel.org/stable/c/ff6fc65b3bf73acc5ee71919154d830ad5431362"},{"url":"https://git.kernel.org/stable/c/9109489cc8c34e50d15575a3d1ff82af586bc1aa"},{"url":"https://git.kernel.org/stable/c/28f5ed477eef166d678d6966762cbc1de9b4f436"},{"url":"https://git.kernel.org/stable/c/1cd85a19748b2407830376a5cbae5c0f126016e5"},{"url":"https://git.kernel.org/stable/c/c21b90f77687075115d989e53a8ec5e2bb427ab1"}],"tags":["cve.org"],"epss":0.00135,"epssPercentile":0.03343,"ingestedAt":"2026-09-08T15:33:26.988Z","slug":"CVE-2026-46174","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `Linux >= f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 < 1e23b30a80b14e5764657401ee2cca030525ae8e`\n- `Linux >= f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 < f5bc3aef7df46eaaf423d7413ab8833f704ae576`\n- `Linux >= f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 < 251497955f2314cd39d43191e81c6151dead4c7b`\n- `Linux >= f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 < ff6fc65b3bf73acc5ee71919154d830ad5431362`\n- `Linux >= f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 < 9109489cc8c34e50d15575a3d1ff82af586bc1aa`\n- `Linux >= f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 < 28f5ed477eef166d678d6966762cbc1de9b4f436`\n- `Linux >= f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 < 1cd85a19748b2407830376a5cbae5c0f126016e5`\n- `Linux >= f7f3dc00f61261cdc9ccd8b886f21bc4dffd6fd9 < c21b90f77687075115d989e53a8ec5e2bb427ab1`\n- `Linux 5abd1583e06b3963e5c9d915760367de86808b78`\n- `Linux 4ba461d426490b6ed7e8298c4d3b7a13aa5d2686`\n- `Linux 5a63725cd18fcee2af6ec46ccb856b64ad3077b4`\n- `Linux >= 3.16.58 < 3.17`\n- `Linux >= 4.4.144 < 4.5`\n- `Linux >= 4.9.102 < 4.10`\n- `Linux 4.14`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}