{"id":"UBUNTU-CVE-2018-19591","details":"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.","modified":"2026-04-22T13:01:57.728737Z","published":"2018-12-04T16:29:00Z","related":["USN-4416-1"],"upstream":["CVE-2018-19591"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-19591"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4416-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-19591"}],"affected":[{"package":{"name":"glibc","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/glibc@2.27-3ubuntu1.2?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.27-3ubuntu1.2"}]}],"versions":["2.26-0ubuntu2","2.26-0ubuntu2.1","2.27-0ubuntu2","2.27-0ubuntu3","2.27-3ubuntu1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"glibc-source","binary_version":"2.27-3ubuntu1.2"},{"binary_name":"libc-bin","binary_version":"2.27-3ubuntu1.2"},{"binary_name":"libc-dev-bin","binary_version":"2.27-3ubuntu1.2"},{"binary_name":"libc6","binary_version":"2.27-3ubuntu1.2"},{"binary_name":"libc6-amd64","binary_version":"2.27-3ubuntu1.2"},{"binary_name":"libc6-armel","binary_version":"2.27-3ubuntu1.2"},{"binary_name":"libc6-dev-amd64","binary_version":"2.27-3ubuntu1.2"},{"binary_name":"libc6-dev-armel","binary_version":"2.27-3ubuntu1.2"},{"binary_name":"libc6-dev-i386","binary_version":"2.27-3ubuntu1.2"},{"binary_name":"libc6-dev-s390","binary_version":"2.27-3ubuntu1.2"},{"binary_name":"libc6-dev-x32","binary_version":"2.27-3ubuntu1.2"},{"binary_name":"libc6-i386","binary_version":"2.27-3ubuntu1.2"},{"binary_name":"libc6-pic","binary_version":"2.27-3ubuntu1.2"},{"binary_name":"libc6-s390","binary_version":"2.27-3ubuntu1.2"},{"binary_name":"libc6-x32","binary_version":"2.27-3ubuntu1.2"},{"binary_name":"locales","binary_version":"2.27-3ubuntu1.2"},{"binary_name":"locales-all","binary_version":"2.27-3ubuntu1.2"},{"binary_name":"multiarch-support","binary_version":"2.27-3ubuntu1.2"},{"binary_name":"nscd","binary_version":"2.27-3ubuntu1.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-19591.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}