Security Advisory

CVE-2026-4438

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-03-20 19:59:06

Last updated 2026-07-14 12:45:26

Assigner glibc

CVSS score not scored

State PUBLISHED

Description

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.

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