CVE-2023-3640

EIP tracks 1 public exploit for CVE-2023-3640. PoCs published by pray77.

AI-analyzed exploit summary This repository contains a working exploit PoC for CVE-2023-3640, targeting a Linux kernel vulnerability. The exploit leverages hardware breakpoints and per CPU entry area mapping to achieve privilege escalation via a ROP chain.

A possible unauthorized memory access flaw was found in the Linux kernel's cpu_entry_area mapping of X86 CPU data to memory, where a user may guess the location of exception stacks or other important data. Based on the previous CVE-2023-0597, the 'Randomize per-cpu entry area' feature was implemented in /arch/x86/mm/cpu_entry_area.c, which works through the init_cea_offsets() function when KASLR is enabled. However, despite this feature, there is still a risk of per-cpu entry area leaks. This issue could allow a local user to gain access to some important data with memory in an expected location and potentially escalate their privileges on the system.