CVE-2026-43113 Linux内核wl1251驱动越界访问漏洞

/* * Conceptual PoC for CVE-2026-43113 * Demonstrates the lack of bounds checking in wl1251_tx_packet_cb */ #include <stdio.h> #include <stdint.h> #define TX_FRAMES_SIZE 16 struct wl1251 { void *tx_frames[TX_FRAMES_SIZE]; }; // Simulate the vulnerable callback function void vulnerable_callback(struct wl1251 *wl, uint8_t packet_id) { // FLAW: No check if packet_id < TX_FRAMES_SIZE printf("Accessing tx_frames index: %d\n", packet_id); // This line causes out-of-bounds read if packet_id >= 16 void *frame = wl->tx_frames[packet_id]; if (frame) { printf("Processing frame\n"); } } int main() { struct wl1251 device = {0}; // Simulate firmware sending a malicious ID (e.g., 20) uint8_t malicious_id = 20; printf("Triggering OOB access with ID: %d\n", malicious_id); vulnerable_callback(&device, malicious_id); return 0; }