AZL-100277
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-100277.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-100277
- Upstream
- Published
- 2026-09-11T20:19:25Z
- Modified
- 2026-09-13T06:06:36Z
- Summary
- CVE-2026-89451 affecting package kernel 6.6.150.1-1
- Details
-
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