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CVE-2026-89452

8.4 · HIGH

In the Linux kernel, the following vulnerability has been resolved: iommu/msm: Unwind probe state on registration failure msm_iommu_probe() adds its devm-managed IOMMU object to qcom_iommu_device…

Published Sep 11, 2026EPSS 0.19%

Overview

CVE-2026-89452 is a high-severity vulnerability. It was published on September 11, 2026 and has a CVSS 3.1 base score of 8.4 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

iommu/msm: Unwind probe state on registration failure

msm_iommu_probe() adds its devm-managed IOMMU object to

qcom_iommu_devices before adding the IOMMU sysfs device and registering

it with the IOMMU core.

If iommu_device_sysfs_add() fails, probe returns with the object still on

qcom_iommu_devices. The driver core then releases the devm allocation,

leaving a dangling list entry that later list walks may dereference.

If iommu_device_register() fails, the same dangling list entry remains

and the sysfs device is left registered as well.

Unwind the sysfs device and global list entry in reverse setup order on

the corresponding failure paths.

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/51424c14dbdadc8c2ad4abf842265a50f69d78aaRefgit.kernel.org/stable/c/51e37f9179387b6e3fa64a3d3b4fece1a38b3a02Refgit.kernel.org/stable/c/535a200220ca2c83bc8bf54bd2cbe045d6ee70c4Refgit.kernel.org/stable/c/6a1ae472113762f794682229a0f233f1ee0f69a4Refgit.kernel.org/stable/c/7f7074a886c4a93e3d12076ce60a510a1ebe400cRefgit.kernel.org/stable/c/f532401be9312ecd166f616bb74a65b0b4c150fa

How CyberStrike helps

Frequently asked questions

What is CVE-2026-89452?

CVE-2026-89452 is a high-severity vulnerability. It was published on September 11, 2026 and has a CVSS 3.1 base score of 8.4 (HIGH).

How severe is CVE-2026-89452?

This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-89452?

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-2026-89452?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-89452 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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