Security Advisory

CVE-2026-23429

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-04-03 15:15:15

Last updated 2026-05-23 16:04:48

Assigner Linux

State PUBLISHED

Description

In the Linux kernel, the following vulnerability has been resolved: iommu/sva: Fix crash in iommu_sva_unbind_device() domain->mm->iommu_mm can be freed by iommu_domain_free(): iommu_domain_free() mmdrop() __mmdrop() mm_pasid_drop() After iommu_domain_free() returns, accessing domain->mm->iommu_mm may dereference a freed mm structure, leading to a crash. Fix this by moving the code that accesses domain->mm->iommu_mm to before the call to iommu_domain_free().

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