CVE-2024-26738

Summary

CVE-2024-26738 is a Linux kernel vulnerability affecting PowerPC and pSeries systems. When dynamically adding a PCI device, the kernel encounters a NULL pointer dereference due to incomplete initialization of the pci_controller. This issue occurs because a newly added iommu_device structure is not properly registered during DLPAR add, leading to a kernel oops. The commit "powerpc/iommu: Add iommu_ops to report capabilities and allow blocking domains" introduced this problem. To mitigate this vulnerability, the iommu device must be registered during DLPAR add as well.

Prevent cyber attacks with Recorded Future by prioritizing and patching critical vulnerabilities being exploited by threat actors targeting your industry. Book your demo to learn more.