copy-fail-CVE-2026-31431-C

Verified on ubuntu 24,ubuntu 25,kali 2026.

gcc -o exploit exploit.c -lz && chmod +x exploit && ./exploit

Static compilation

sudo apt install zlib1g-dev
gcc -static -o exploit exploit.c -lz

or

aarch64-linux-gnu-gcc -o exploit exploit.c -lz -static