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CVE-2026-89448

iommu/vt-d: Force requesting ACS when tboot is enabled PUBLISHED

Description (CNA)

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().

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 5d990b627537e59a3a2f039ff588a4750e9c1a6a before 579eb867d3da63f3b5e32f235925e1daa7ec70d0; affected 5d990b627537e59a3a2f039ff588a4750e9c1a6a before aaeb81241e802c86be69394f72d49fde3f861fbb; affected 5d990b627537e59a3a2f039ff588a4750e9c1a6a before 45705a6bfdb283f7b3b509010fd617b72f942537; affected 5d990b627537e59a3a2f039ff588a4750e9c1a6a before 87bc611c6c98a41c00feb7b06b0c297dd141a2ae; affected 5d990b627537e59a3a2f039ff588a4750e9c1a6a before 607432b2618b61df81134be0ef2562b8300c1216
Linux / Linuxaffected 2.6.33; unaffected 0 before 2.6.33; unaffected 6.6.157 through 6.6.*; unaffected 6.12.109 through 6.12.*; unaffected 6.18.50 through 6.18.*; unaffected 7.2.4 through 7.2.*; unaffected 7.3 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.