CVE-2026-89448
criticalIn the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Force requesting ACS when tboot is enabled Currently the conditions of reques…
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
9.3
9.3 (CVSS v3.1)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
Timeline (UTC)
Published: 2026-09-11 20:19
Modified: 2026-10-19 09:17
NVD status: Received
Last synced 1 day ago
Verified against the source API 2026-10-27 06:52 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://git.kernel.org/stable/c/45705a6bfdb283f7b3b509010fd617b72f942537 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/579eb867d3da63f3b5e32f235925e1daa7ec70d0 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/607432b2618b61df81134be0ef2562b8300c1216 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/87bc611c6c98a41c00feb7b06b0c297dd141a2ae 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/aaeb81241e802c86be69394f72d49fde3f861fbb 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:52 UTC · record ↗