CVE-2026-23429
Description
AI Translation Available
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().
https://git.kernel.org/stable/c/06e14c36e20b48171df13d51b89fe67c594ed07a
https://git.kernel.org/stable/c/58abeb7b9562f25bdfa2f5ae5ce803eb02e74433
https://git.kernel.org/stable/c/f5daaa2c959d9f894fb5b1ab76da8612dd220a0d