Threats tagged 'ghsa-5wwm-gpr7-9rm3'

CVE-2026-93239 is a vulnerability in the Linux kernel's arm64 memory management subsystem involving a lockless page-table walk in the show_pte() function. The flaw allows a concurrent teardown to free a page table while it is being walked, potentially causing the function to dereference a released page or derive an invalid pointer. The issue is addressed by using lockless offset helpers with saved parent entries and disabling local interrupts during the walk to prevent concurrent frees. This fix reduces the risk of faults caused by accessing freed memory during page-table walks.