CVE-2026-89452

iommu/msm: Unwind probe state on registration failure

State: Published
Severity: 8.4 High
Published: Sep 11, 2026
Updated: Oct 30, 2026
Reserved: Sep 11, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	8.4 High	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	42df43b36163ed7d0ab13992e411093252903273 to before 51424c14dbdadc8c2ad4abf842265a50f69d78aaAffected 42df43b36163ed7d0ab13992e411093252903273 to before 6a1ae472113762f794682229a0f233f1ee0f69a4Affected 42df43b36163ed7d0ab13992e411093252903273 to before 51e37f9179387b6e3fa64a3d3b4fece1a38b3a02Affected 42df43b36163ed7d0ab13992e411093252903273 to before f532401be9312ecd166f616bb74a65b0b4c150faAffected 42df43b36163ed7d0ab13992e411093252903273 to before 7f7074a886c4a93e3d12076ce60a510a1ebe400cAffected 42df43b36163ed7d0ab13992e411093252903273 to before 535a200220ca2c83bc8bf54bd2cbe045d6ee70c4Affected
LinuxLinux	4.11Affected before 4.11Not affected 6.1.191 through 6.1.Not affected 6.6.160 through 6.6.Not affected 6.12.112 through 6.12.Not affected 6.18.50 through 6.18.Not affected 7.2.4 through 7.2.*Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

42df43b36163ed7d0ab13992e411093252903273 to before 51424c14dbdadc8c2ad4abf842265a50f69d78aaAffected
42df43b36163ed7d0ab13992e411093252903273 to before 6a1ae472113762f794682229a0f233f1ee0f69a4Affected
42df43b36163ed7d0ab13992e411093252903273 to before 51e37f9179387b6e3fa64a3d3b4fece1a38b3a02Affected
42df43b36163ed7d0ab13992e411093252903273 to before f532401be9312ecd166f616bb74a65b0b4c150faAffected
42df43b36163ed7d0ab13992e411093252903273 to before 7f7074a886c4a93e3d12076ce60a510a1ebe400cAffected
42df43b36163ed7d0ab13992e411093252903273 to before 535a200220ca2c83bc8bf54bd2cbe045d6ee70c4Affected

LinuxLinux

4.11Affected
before 4.11Not affected
6.1.191 through 6.1.*Not affected
6.6.160 through 6.6.*Not affected
6.12.112 through 6.12.*Not affected
6.18.50 through 6.18.*Not affected
7.2.4 through 7.2.*Not affected
7.3 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.