iommu/vt-d: Force requesting ACS when tboot is enabled (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.14 % · percentile 3 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
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().
References
- https://git.kernel.org/stable/c/3fd2b60ea9bd18348f5e971678f31041ef211047
- https://git.kernel.org/stable/c/579eb867d3da63f3b5e32f235925e1daa7ec70d0
- https://git.kernel.org/stable/c/aaeb81241e802c86be69394f72d49fde3f861fbb
- https://git.kernel.org/stable/c/45705a6bfdb283f7b3b509010fd617b72f942537
- https://git.kernel.org/stable/c/87bc611c6c98a41c00feb7b06b0c297dd141a2ae
- https://git.kernel.org/stable/c/607432b2618b61df81134be0ef2562b8300c1216
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | CRITICAL 9.3 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H | Linux |
| CVSS 3.1 | CRITICAL 9.3 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
European references
- ENISA EUVD · EUVD-2026-76354
- GCVE · GCVE-0-2026-89448
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1372 — Multiples vulnérabilités dans les produits SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1335 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1289 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1253 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 5d990b627537e59a3a2f039ff588a4750e9c1a6a < 3fd2b60ea9bd18348f5e971678f31041ef211047 ; affected 5d990b627537e59a3a2f039ff588a4750e9c1a6a < 579eb867d3da63f3b5e32f235925e1daa7ec70d0 ; affected 5d990b627537e59a3a2f039ff588a4750e9c1a6a < aaeb81241e802c86be69394f72d49fde3f861fbb ; affected 5d990b627537e59a3a2f039ff588a4750e9c1a6a < 45705a6bfdb283f7b3b509010fd617b72f942537 ; affected 5d990b627537e59a3a2f039ff588a4750e9c1a6a < 87bc611c6c98a41c00feb7b06b0c297dd141a2ae ; affected 5d990b627537e59a3a2f039ff588a4750e9c1a6a < 607432b2618b61df81134be0ef2562b8300c1216 |
| Linux · Linux | affected 2.6.33 ; unaffected 0 < 2.6.33 ; unaffected 6.1.191 ≤ 6.1.* ; unaffected 6.6.157 ≤ 6.6.* ; unaffected 6.12.109 ≤ 6.12.* ; unaffected 6.18.50 ≤ 6.18.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |