CVE-2026-4438

MEDIUM

5.4

Descripcion

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.

Detalles CVE

Puntuacion CVSS v3.15.4

SeveridadMEDIUM

Vector CVSSCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Vector de ataqueADJACENT_NETWORK

ComplejidadLOW

Privilegios requeridosNONE

Interaccion usuarioNONE

Publicado3/20/2026

Ultima modificacion4/7/2026

Fuentenvd

Avistamientos honeypot0

Productos afectados

gnu:glibc

Debilidades (CWE)

CWE-20CWE-88

Referencias

https://sourceware.org/bugzilla/show_bug.cgi?id=34015(3ff69d7a-14f2-4f67-a097-88dee7810d18)

Correlaciones IOC

Sin correlaciones registradas

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