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CVE-2026-23429

7.8 · HIGH

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…

Published Apr 3, 2026EPSS 0.13%

Overview

CVE-2026-23429 is a high-severity vulnerability. It was published on April 3, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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().

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/06e14c36e20b48171df13d51b89fe67c594ed07aRefgit.kernel.org/stable/c/58abeb7b9562f25bdfa2f5ae5ce803eb02e74433Refgit.kernel.org/stable/c/f5daaa2c959d9f894fb5b1ab76da8612dd220a0d

How CyberStrike helps

Frequently asked questions

What is CVE-2026-23429?

CVE-2026-23429 is a high-severity vulnerability. It was published on April 3, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-23429?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-23429?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-23429?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-23429 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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