CVE-2026-31626 Linux内核rtl8723bs未初始化内存漏洞

/* * Conceptual PoC for Uninitialized Variable Usage * This code demonstrates the vulnerability logic in rtw_BIP_verify(). */ #include <stdio.h> #include <string.h> // Vulnerable function simulation void vulnerable_function(unsigned char *input) { unsigned long long le_tmp64; // Uninitialized stack variable // Simulating the copy of 6 bytes into an 8-byte variable memcpy(&le_tmp64, input, 6); // The last 2 bytes of le_tmp64 contain random stack garbage printf("Value: 0x%llx\n", le_tmp64); // If the garbage bytes happen to match a specific value, // security checks could be bypassed. } int main() { unsigned char data[6] = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06}; vulnerable_function(data); return 0; }