CVE-2009-5029: Integer overflow in the __tzfile_read function in glibc before 2.15 allows context-dependent attackers to c...

Security readout for executives and security teams

This is an old glibc flaw where a specially crafted timezone file can crash software and might allow code execution in some conditions. Business risk depends on whether legacy Linux systems still run glibc before 2.15 and expose software paths that let an attacker influence timezone file loading. Exposure is most likely on unsupported or long-lived Linux hosts using glibc before 2.15. Internet-facing services are relevant only where attacker-controlled input can make glibc parse a crafted timezone file. Prioritize discovery and cleanup of legacy Linux systems. This is not KEV-backed active exploitation, but old glibc on exposed services can create avoidable outage and potential compromise risk. Mitigation focus: Inventory Linux systems and identify glibc versions before 2.15.; Apply vendor-supported glibc updates or upgrade to a fixed release.; Review vendor advisories for distribution-specific backports and package names..

Prepared

Jun 14, 2026, 22:07 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.