WID-SEC-W-2026-0817

csafDEcert_bund

DeutschShown in its original language — a full translation is planned for a future version.

GNU libc: Mehrere Schwachstellen ermöglichen Manipulation von DNS Antworten

view advisory published 2026-03-22

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in GNU libc ausnutzen, um DNS Antworten zu manipulieren.

01

describes (2)

Related CVEs.

IDseverity exploitable
CVE-2026-4438US——
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…
CVE-2026-4437US——
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 cr…
02

references

External citations — patches, advisories, analysis.

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