Critical severity9.3NVD Advisory· Published Sep 11, 2026· Updated Oct 19, 2026
CVE-2026-89448
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
3- osv-coords2 versions
>= 2.6.33, < 6.6.157+ 1 more
- (no CPE)range: >= 2.6.33, < 6.6.157
- (no CPE)range: < 7.2.7-1.1
Patches
Vulnerability mechanics
References
5- git.kernel.org/stable/c/45705a6bfdb283f7b3b509010fd617b72f942537nvd
- git.kernel.org/stable/c/579eb867d3da63f3b5e32f235925e1daa7ec70d0nvd
- git.kernel.org/stable/c/607432b2618b61df81134be0ef2562b8300c1216nvd
- git.kernel.org/stable/c/87bc611c6c98a41c00feb7b06b0c297dd141a2aenvd
- git.kernel.org/stable/c/aaeb81241e802c86be69394f72d49fde3f861fbbnvd
News mentions
0No linked articles in our index yet.