CVE-2018-11236: GNU Glibc

Critical severity, CVSS 9.8. EPSS: 7.1% chance of exploitation in the next 30 days.

stdlib/canonicalize.c in the GNU C Library (aka glibc or libc6) 2.27 and earlier, when processing very long pathname arguments to the realpath function, could encounter an integer overflow on 32-bit architectures, leading to a stack-based buffer overflow and, potentially, arbitrary code execution.

Affected products

• GNU Glibc: up to and including 2.27
• Netapp Data Ontap Edge: affected versions not specified
• Netapp Element Software Management: affected versions not specified
• Oracle Communications Session Border Controller: version 8.0.0 only; version 8.1.0 only; version 8.2.0 only
• Oracle Enterprise Communications Broker: version 3.0.0 only; version 3.1.0 only
• Red Hat Enterprise Linux Desktop: version 7.0 only
• Red Hat Enterprise Linux Server: version 7.0 only
• Red Hat Enterprise Linux Workstation: version 7.0 only
• Red Hat Virtualization Host: version 4.0 only

Published 2018-05-18. Last modified 2026-06-17.