{"id":"CVE-2026-89448","summary":"iommu/vt-d: Force requesting ACS when tboot is enabled","details":"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().","modified":"2026-11-14T17:28:21.549497132Z","published":"2026-09-11T19:43:14.746Z","related":["SUSE-SU-2026:24179-1","SUSE-SU-2026:24181-1","SUSE-SU-2026:24182-1","SUSE-SU-2026:24184-1","SUSE-SU-2026:24197-1","SUSE-SU-2026:24235-1","SUSE-SU-2026:24315-1","SUSE-SU-2026:24316-1","SUSE-SU-2026:4640-1","SUSE-SU-2026:4687-1","SUSE-SU-2026:4706-1","openSUSE-SU-2026:11880-1","openSUSE-SU-2026:22091-1","openSUSE-SU-2026:22309-1","openSUSE-SU-2026:22313-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89448.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/3fd2b60ea9bd18348f5e971678f31041ef211047"},{"type":"WEB","url":"https://git.kernel.org/stable/c/45705a6bfdb283f7b3b509010fd617b72f942537"},{"type":"WEB","url":"https://git.kernel.org/stable/c/579eb867d3da63f3b5e32f235925e1daa7ec70d0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/607432b2618b61df81134be0ef2562b8300c1216"},{"type":"WEB","url":"https://git.kernel.org/stable/c/87bc611c6c98a41c00feb7b06b0c297dd141a2ae"},{"type":"WEB","url":"https://git.kernel.org/stable/c/aaeb81241e802c86be69394f72d49fde3f861fbb"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89448.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89448"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5d990b627537e59a3a2f039ff588a4750e9c1a6a"},{"fixed":"3fd2b60ea9bd18348f5e971678f31041ef211047"},{"fixed":"579eb867d3da63f3b5e32f235925e1daa7ec70d0"},{"fixed":"aaeb81241e802c86be69394f72d49fde3f861fbb"},{"fixed":"45705a6bfdb283f7b3b509010fd617b72f942537"},{"fixed":"87bc611c6c98a41c00feb7b06b0c297dd141a2ae"},{"fixed":"607432b2618b61df81134be0ef2562b8300c1216"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89448.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.33"},{"fixed":"6.1.191"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.157"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.109"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.50"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89448.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"}]}