CVE-2026-23429
High
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().
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedApr 3, 2026
First seenApr 3, 2026
How to fix
Update
- linux linux_kernel6.18.20, 6.19.10 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 6.18.7 ≤ v < 6.18.20, 6.19.1 ≤ v < 6.19.10, 6.19, 7.0 | 6.18.20, 6.19.10 |
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