{"cve":"CVE-2026-89448","nvd":{"published":"2026-09-11T20:19:25.347","modified":"2026-10-19T09:17:36.963","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\niommu/vt-d: Force requesting ACS when tboot is enabled\n\nCurrently the conditions of requesting ACS in detect_intel_iommu()\ndon't include tboot, leading to a possible misconfiguration with ACS\ndisabled (e.g. due to user opts) while iommu is later forced on by\ntboot_force_iommu().\n\nFix it by checking tboot in detect_intel_iommu().","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","score":9.3},"cwes":[],"references":["https://git.kernel.org/stable/c/45705a6bfdb283f7b3b509010fd617b72f942537","https://git.kernel.org/stable/c/579eb867d3da63f3b5e32f235925e1daa7ec70d0","https://git.kernel.org/stable/c/607432b2618b61df81134be0ef2562b8300c1216","https://git.kernel.org/stable/c/87bc611c6c98a41c00feb7b06b0c297dd141a2ae","https://git.kernel.org/stable/c/aaeb81241e802c86be69394f72d49fde3f861fbb"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:53:43.293028046+00:00"},"epss":{"cve":"CVE-2026-89448","score":0.00142,"percentile":0.03442,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}