CVE-2018-20651: GNU Binutils

Medium severity, CVSS 5.5. EPSS: 2.2% chance of exploitation in the next 30 days.

A NULL pointer dereference was discovered in elf_link_add_object_symbols in elflink.c in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.31.1. This occurs for a crafted ET_DYN with no program headers. A specially crafted ELF file allows remote attackers to cause a denial of service, as demonstrated by ld.

Affected products

• GNU Binutils: version 2.31.1 only

Published 2019-01-01. Last modified 2026-06-17.