CVE-2026-89448

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().

CVSS v3 9.3 CRITICAL

9.3^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 2.5 / Impact : 6.0

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
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

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-11 20:19

Updated : 2026-09-14 13:19

NVD link : CVE-2026-89448

Mitre link : CVE-2026-89448

CVE.ORG link : CVE-2026-89448

JSON object : View

Products Affected

No product.

CWE

No CWE.

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