CVE-2026-23429

MediumCVSS 5.5/10Last modified Jul 24, 2026

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().

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected software

VendorProductVersions
LinuxLinux>= 9f0a7ab700f8620e433b05c57fbd26c92ea186d9, < 58abeb7b9562f25bdfa2f5ae5ce803eb02e74433; >= e37d5a2d60a338c5917c45296bac65da1382eda5, < f5daaa2c959d9f894fb5b1ab76da8612dd220a0d; >= e37d5a2d60a338c5917c45296bac65da1382eda5, < 06e14c36e20b48171df13d51b89fe67c594ed07a; >= 6.18.7, < 6.18.20
LinuxLinux6.19

References

Timeline

Published
Apr 3, 2026
Last modified
Jul 24, 2026
NVD status
Modified

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CVE-2026-23429: Medium severity, CVSS 5.5 | Vulnix