Unrated severityNVD Advisory· Published Sep 11, 2026

CVE-2026-89448

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().

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Linux/Kernelllm-fuzzy

Patches

Vulnerability mechanics

References

git.kernel.org/stable/c/45705a6bfdb283f7b3b509010fd617b72f942537nvd
git.kernel.org/stable/c/607432b2618b61df81134be0ef2562b8300c1216nvd
git.kernel.org/stable/c/87bc611c6c98a41c00feb7b06b0c297dd141a2aenvd
git.kernel.org/stable/c/aaeb81241e802c86be69394f72d49fde3f861fbbnvd

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patch	-0.070
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