CVE-2018-18521: Canonical Ubuntu Linux

Medium severity, CVSS 5.5. EPSS: 1.8% chance of exploitation in the next 30 days.

Divide-by-zero vulnerabilities in the function arlib_add_symbols() in arlib.c in elfutils 0.174 allow remote attackers to cause a denial of service (application crash) with a crafted ELF file, as demonstrated by eu-ranlib, because a zero sh_entsize is mishandled.

Affected products

• Canonical Ubuntu Linux: version 16.04 only; version 18.04 only; version 18.10 only
• Debian Debian Linux: version 8.0 only; version 9.0 only
• Elfutils Project Elfutils: version 0.174 only
• Opensuse Leap: version 15.0 only; version 15.1 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

Published 2018-10-19. Last modified 2026-06-17.