{"id":"AZL-80282","summary":"CVE-2026-4438 affecting package glibc for versions less than 2.38-19","details":"Calling gethostbyaddr or gethostbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend in the GNU C library version 2.34 to version 2.43 could result in an invalid DNS hostname being returned to the caller in violation of the DNS specification.","modified":"2026-08-31T05:26:27Z","published":"2026-03-20T20:16:49Z","upstream":["CVE-2026-4438"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4438"}],"affected":[{"package":{"name":"glibc","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/glibc"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.38-19"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-80282.json"}}],"schema_version":"1.9.0"}