CVE-2026-89451
iommu/sva: Set handle->dev before the SVA handle is visible
At a glance
- Source
- NVD
- EPSS
- EPSS 0.21 % · percentile 11 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
In the Linux kernel, the following vulnerability has been resolved: iommu/sva: Set handle->dev before the SVA handle is visible iommu_attach_device_pasid() installs the new SVA attach handle in the group PASID lookup before iommu_sva_bind_device() returns. A concurrent bind can therefore find and reuse the same handle after iommu_sva_lock is dropped. handle->dev was initialized after dropping iommu_sva_lock. This leaves a window where a racing bind can return a handle whose dev pointer is still NULL. A subsequent iommu_sva_unbind_device() can then dereference it via handle->dev->iommu_group. Initialize handle->dev before releasing iommu_sva_lock so any visible SVA handle is fully initialized.
References
- https://git.kernel.org/stable/c/c4c71368bc5c5b3840590d39b4cfa12d733cadf4
- https://git.kernel.org/stable/c/bcffb1c75da8fc9d51168ff9f09d471c26507912
- https://git.kernel.org/stable/c/968e9a1f71140c86dc4092f6b361e997923f3813
- https://git.kernel.org/stable/c/37a96a30617a4c96f048a5874c00509bc4fe4d85
- https://git.kernel.org/stable/c/530f8f9c3546cb3ebee1b135375aaee08a073ebb
European references
- ENISA EUVD · EUVD-2026-76357
- GCVE · GCVE-0-2026-89451
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 be51b1d6bbff48c7d1943a8ff1e5a55777807f6e < c4c71368bc5c5b3840590d39b4cfa12d733cadf4 ; affected be51b1d6bbff48c7d1943a8ff1e5a55777807f6e < bcffb1c75da8fc9d51168ff9f09d471c26507912 ; affected be51b1d6bbff48c7d1943a8ff1e5a55777807f6e < 968e9a1f71140c86dc4092f6b361e997923f3813 ; affected be51b1d6bbff48c7d1943a8ff1e5a55777807f6e < 37a96a30617a4c96f048a5874c00509bc4fe4d85 ; affected be51b1d6bbff48c7d1943a8ff1e5a55777807f6e < 530f8f9c3546cb3ebee1b135375aaee08a073ebb |
| Linux · Linux | affected 6.2 ; unaffected 0 < 6.2 ; unaffected 6.6.160 ≤ 6.6.* ; unaffected 6.12.109 ≤ 6.12.* ; unaffected 6.18.50 ≤ 6.18.* ; unaffected 7.2.4 ≤ 7.2.* |
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 |