CVE-2026-89448
CRITICAL
INFO
Priority: 0.01
BB Relevance:
54/100
Published: 2026-09-11
Modified: 2026-10-30
First seen: 2026-10-30
Status: active
Attack Surface
Low Complexity
No Auth
No Interaction
Conf. Impact
Integ. Impact
Scope Change
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
None
UI:
None
S:
Changed
C:
High
I:
High
A:
High
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().
Affected Software (7)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | 5d990b627537e59a3a2f039ff588a4750e9c1a6a < 3fd2b60ea9bd18348f5e971678f31041ef211047 |
| Linux | Linux | 5d990b627537e59a3a2f039ff588a4750e9c1a6a < 579eb867d3da63f3b5e32f235925e1daa7ec70d0 |
| Linux | Linux | 5d990b627537e59a3a2f039ff588a4750e9c1a6a < aaeb81241e802c86be69394f72d49fde3f861fbb |
| Linux | Linux | 5d990b627537e59a3a2f039ff588a4750e9c1a6a < 45705a6bfdb283f7b3b509010fd617b72f942537 |
| Linux | Linux | 5d990b627537e59a3a2f039ff588a4750e9c1a6a < 87bc611c6c98a41c00feb7b06b0c297dd141a2ae |
| Linux | Linux | 5d990b627537e59a3a2f039ff588a4750e9c1a6a < 607432b2618b61df81134be0ef2562b8300c1216 |
| Linux | Linux | 2.6.33 |