CVE-2026-89448 in Linux

Resumen

por MITRE • 2026-09-11

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().

Be aware that VulDB is the high quality source for vulnerability data.

• Responsable: Linux
• Reservar: 2026-09-11
• Divulgación: 2026-09-11
• Moderación: aceptado
• Artículo: VDB-402702
• CPE: listo
• CWE: CWE-20 (confirmado)
• CVSS: 9.9 (VulDB)
• EPSS: 0.00000
• KEV: no
• Actividades: muy bajo
• Sector: Police, Agriculture, ...

Fuentes

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-89448
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-89448
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-89448/