CVE-2026-89452

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> iommu/msm: Unwind probe state on registration failure<br /> <br /> msm_iommu_probe() adds its devm-managed IOMMU object to<br /> qcom_iommu_devices before adding the IOMMU sysfs device and registering<br /> it with the IOMMU core.<br /> <br /> If iommu_device_sysfs_add() fails, probe returns with the object still on<br /> qcom_iommu_devices. The driver core then releases the devm allocation,<br /> leaving a dangling list entry that later list walks may dereference.<br /> <br /> If iommu_device_register() fails, the same dangling list entry remains<br /> and the sysfs device is left registered as well.<br /> <br /> Unwind the sysfs device and global list entry in reverse setup order on<br /> the corresponding failure paths.