CVE-2026-23429

Summary

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().

Affected Software

VendorProductVersion RangeStatus
LinuxLinux9f0a7ab700f8620e433b05c57fbd26c92ea186d9 < 58abeb7b9562f25bdfa2f5ae5ce803eb02e74433affected
LinuxLinuxe37d5a2d60a338c5917c45296bac65da1382eda5 < f5daaa2c959d9f894fb5b1ab76da8612dd220a0daffected
LinuxLinuxe37d5a2d60a338c5917c45296bac65da1382eda5 < 06e14c36e20b48171df13d51b89fe67c594ed07aaffected
LinuxLinux6.18.7 < 6.18.20affected
LinuxLinux6.19affected
LinuxLinux0 < 6.19unaffected
LinuxLinux6.18.20 <= 6.18.*unaffected
LinuxLinux6.19.10 <= 6.19.*unaffected
LinuxLinux7.0 <= *unaffected

Weaknesses

References