CyberRota Analysis
AI-GeneratedThe vulnerability in the Linux kernel affects the IOMMU subsystem, specifically related to error handling during unmap operations when iommu_debug is enabled. This flaw can lead to improper tracking of memory mappings, potentially allowing for unauthorized access or manipulation of memory, which could compromise system integrity. Organizations using Linux systems with IOMMU enabled should prioritize addressing this vulnerability to mitigate risks associated with memory management errors.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: iommu: Handle unmap error when iommu_debug is enabled Sashiko noticed a latent bug where the map error flow called iommu_unmap() which calls iommu_debug_unmap_begin()/iommu_debug_unmap_end() however since this is an error path the map flow never actually established the original iommu_debug_map() it will malfunction. Lift the unmap error handling into iommu_map_nosync() and reorder it so the trace_map()/iommu_debug_map() records the partial mapping and then immediately unmaps it. This avoid creating the unbalanced tracking and provides saner tracing instead of a unmap unmatched to any map.
Related CVEs
Other vulnerabilities affecting the same vendor(s)