GHOST Vulnerability (CVE‑2015‑0235)

This advisory documents GHOST (CVE-2015-0235), a severe heap-based buffer overflow in glibc's hostname handling (gethostbyname/gethostbyname2) present in glibc 2.2–2.17 that allows unauthenticated remote code execution when processing long numeric/dotted hostnames; it lists affected distributions and packages, notes an Exim exploit and imminent PoC, and provides detection and remediation steps (update to glibc ≥2.18, patch distributions, and restart affected processes/binaries).