CVE Watch9 de out. de 2026

CVE-2026-104112

A missing release of resources in the illumos name service cache daemon (nscd) allows a local user to exhaust kernel memory. The nscd door s

CVSS

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Sem CVSS

EPSS

0.1%

KEV

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Exploit Today

0-100

Publicado: 9 de out. de 2026 · Última mod.: 9 de out. de 2026 · CWE-772

EPSS · 30d

0.1%EPSS · 30 dias0.1%

2026-10-102026-11-05

Descrição técnica

A missing release of resources in the illumos name service cache daemon (nscd) allows a local user to exhaust kernel memory. The nscd door server procedure, switcher() in usr/src/cmd/nscd/nscd_frontend.c, does not close file descriptors that are passed with a door call but not used by the request, and the main nscd door at /var/run/name_service_door accepts passed descriptors from any user in its zone. Because nscd also runs with an unlimited file descriptor limit, an unprivileged local user, including one in a non-global zone, can repeatedly pass a descriptor to its zone's nscd in a door_call() loop, causing the file descriptor table of nscd to grow without bound in kernel memory. This causes a denial of service of nscd and can render processes in all zones on the host unresponsive. The flaw has existed since 2006 (illumos-gate commit cb5caa98), and affects any illumos distribution prior to illumos-gate commit af810a72.

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