IFUNC isn't used directly to patch the functions of another library here, it's j...

account42 9 months ago | parent | context | favorite | on: XZ backdoor: "It's RCE, not auth bypass, and gated...

IFUNC isn't used directly to patch the functions of another library here, it's just the entry point for the exploit code. IFUNC is used as opposed to other ways to execute code on library load because it runs very early (before linking tables are remapped read-only).