CyberRota Analysis
AI-GeneratedThe vulnerability in the Linux kernel affects the coreboot firmware, specifically in the handling of table bounds during resource mapping. An attacker could exploit this flaw by providing a malformed table, potentially leading to memory overflow and unauthorized access to memory outside the intended resource limits. Organizations utilizing Linux systems with coreboot should prioritize this issue to mitigate risks associated with memory corruption and potential system compromise.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: firmware: coreboot: Validate table bounds The existing coreboot_table_populate() bounds checks limit individual entries to the mapped length. However, coreboot_table_probe() replaces the platform resource length with header and table sizes supplied by firmware before mapping the full table. A malformed table can overflow the 32-bit size addition or advertise an extent beyond the resource, causing the driver to map and parse memory outside the resource. A resource shorter than the fixed header is also mapped as though it contained a complete header. Reject resources shorter than the fixed header. After validating the signature, require a complete header, calculate the advertised extent with overflow checking, and reject extents beyond the resource before remapping the table.