CVE-2026-4437

ADVISORY - nist

Summary

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, with a crafted response from the configured DNS server, result in a violation of the DNS specification that causes the application to treat a non-answer section of the DNS response as a valid answer.

Common Weakness Enumeration (CWE)

ADVISORY - nist

CWE-125⁠

Out-of-bounds Read

Impacted images

Advisories

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