{"id":"UBUNTU-CVE-2018-20651","details":"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.","modified":"2026-04-22T11:53:07.150375Z","published":"2019-01-01T16:29:00Z","related":["USN-4336-1"],"upstream":["CVE-2018-20651"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-20651"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4336-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-20651"}],"affected":[{"package":{"name":"binutils","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/binutils@2.30-21ubuntu1~18.04.3?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.30-21ubuntu1~18.04.3"}]}],"versions":["2.29.1-4ubuntu1","2.29.1-6ubuntu1","2.29.1-7ubuntu1","2.29.1-8ubuntu1","2.29.1-10ubuntu1","2.29.1-12ubuntu1","2.30-4ubuntu1","2.30-5ubuntu1","2.30-7ubuntu1","2.30-8ubuntu1","2.30-9ubuntu1","2.30-10ubuntu1","2.30-11ubuntu1","2.30-14ubuntu2","2.30-15ubuntu1","2.30-20ubuntu2~18.04","2.30-21ubuntu1~18.04","2.30-21ubuntu1~18.04.1","2.30-21ubuntu1~18.04.2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"binutils","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-aarch64-linux-gnu","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-alpha-linux-gnu","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-arm-linux-gnueabi","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-arm-linux-gnueabihf","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-common","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-for-build","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-for-host","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-hppa-linux-gnu","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-hppa64-linux-gnu","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-i686-gnu","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-i686-kfreebsd-gnu","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-i686-linux-gnu","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-ia64-linux-gnu","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-m68k-linux-gnu","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-mips-linux-gnu","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-mips64-linux-gnuabi64","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-mips64-linux-gnuabin32","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-mips64el-linux-gnuabi64","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-mips64el-linux-gnuabin32","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-mipsel-linux-gnu","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-mipsisa32r6-linux-gnu","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-mipsisa32r6el-linux-gnu","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-mipsisa64r6-linux-gnuabi64","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-mipsisa64r6-linux-gnuabin32","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-mipsisa64r6el-linux-gnuabi64","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-mipsisa64r6el-linux-gnuabin32","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-multiarch","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-powerpc-linux-gnu","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-powerpc-linux-gnuspe","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-powerpc64-linux-gnu","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-powerpc64le-linux-gnu","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-riscv64-linux-gnu","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-s390x-linux-gnu","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-sh4-linux-gnu","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-source","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-sparc64-linux-gnu","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-x86-64-kfreebsd-gnu","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-x86-64-linux-gnu","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"binutils-x86-64-linux-gnux32","binary_version":"2.30-21ubuntu1~18.04.3"},{"binary_name":"libbinutils","binary_version":"2.30-21ubuntu1~18.04.3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-20651.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"low"}]}