CVE-2018-19591: Fedoraproject Fedora

High severity, CVSS 7.5. EPSS: 5.5% chance of exploitation in the next 30 days.

In the GNU C Library (aka glibc or libc6) through 2.28, attempting to resolve a crafted hostname via getaddrinfo() leads to the allocation of a socket descriptor that is not closed. This is related to the if_nametoindex() function.

Affected products

• Fedoraproject Fedora: version 28 only; version 29 only
• GNU Glibc: up to and including 2.28

Published 2018-12-04. Last modified 2026-06-17.