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VULNERABILITIES

CVE-2026-89448 Details

Description

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Force requesting ACS when tboot is enabled Currently the conditions of requesting ACS in detect_intel_iommu() don't include tboot, leading to a possible misconfiguration with ACS disabled (e.g. due to user opts) while iommu is later forced on by tboot_force_iommu(). Fix it by checking tboot in detect_intel_iommu().

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: kernel.orgCVSS-B:9.3 CRITICALVector:CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://git.kernel.org/stable/c/45705a6bfdb283f7b3b509010fd617b72f942537 kernel.org
https://git.kernel.org/stable/c/579eb867d3da63f3b5e32f235925e1daa7ec70d0 kernel.org
https://git.kernel.org/stable/c/607432b2618b61df81134be0ef2562b8300c1216 kernel.org
https://git.kernel.org/stable/c/87bc611c6c98a41c00feb7b06b0c297dd141a2ae kernel.org
https://git.kernel.org/stable/c/aaeb81241e802c86be69394f72d49fde3f861fbb kernel.org

Weakness Enumeration

No weakness enumeration is available for this CVE.

Affected Products

No affected product data is available for this CVE.

Change History

3 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-89448
NVD Published Date:
Sep 11, 2026
NVD Last Modified:
Sep 14, 2026
Source:
kernel.org
CVE-2026-89448 Details - Not Deferred