Race Condition Exploitation in Linux Kernel 5.15 Race Condition Exploitation in Linux Kernel 5.15

Race Condition Exploitation in Linux Kernel 5.15

A recent analysis of Linux kernel 5.15 revealed an interesting race condition in the memory management subsystem. This vulnerability (CVE-2023-XXXX) demonstrates how timing attacks remain relevant even in modern kernels.

Let's break down the exploit chain:

  1. The race occurs during page table operations
  2. A carefully timed sequence triggers a UAF
  3. This leads to arbitrary kernel memory writes

Testing across 1000 iterations showed 78% reliability on AMD systems and 82% on Intel. The lower AMD success rate appears related to different cache timing characteristics.

Key takeaway: Race condition mitigations need constant review as CPU architectures evolve.