How Dirty Frag rose from the Copy Fail exploit

ReversingLabs reports active weaponization of CVE-2026-31431 (“Dirty Frag/Copy Fail”), identifying 163 unique malicious samples (ELF binaries, Python scripts, and a malicious PyPI wheel) observed before and after the embargo; the analysis includes shellcode disassembly for the V4bel reference exploit, YARA rules targeting the reference shellcode, Spectra Intelligence hunting queries covering the corpus, and remediation and hunting recommendations (patching kernels, scanning supply chain, hunting for Multiverze adoption and staged ELFs).