CVE-2026-104114: NULL pointer dereference in illumos nwamd door handler allows local users to crash the daemon

Severity: medium (CVSS 5.4 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-09 · updated 2026-10-09
Weakness: CWE-476

Description

A NULL pointer dereference in the illumos Network Auto-Magic daemon (nwamd) allows a local user to crash the daemon. nwamd_door_switch() in usr/src/cmd/cmd-inet/lib/nwamd/door_if.c writes to the caller's request structure before checking that a request was supplied, and before checking the caller's credentials. Because the nwamd door at /etc/svc/volatile/nwam/nwam_door is accessible to all local users, an unprivileged user can issue a door_call() with no argument data to crash nwamd; repeated calls place the svc:/network/physical:nwam service into maintenance, stopping automatic network configuration. nwamd runs only when svc:/network/physical:nwam is enabled, which is not the default. The flaw has existed since 2010 (illumos-gate commit 6ba597c5), and affects any illumos distribution prior to illumos-gate commit 0f1064d9.

Affected products

OmniOS: from any before r151054; from r151058 before r151058w; from r151056 before r151056aw; from r151054 before r151054bw — fixed in r151054, r151054bw, r151056aw, r151058w

How to fix

Upgrade to a fixed version: OmniOS r151054, r151054bw, r151056aw, r151058w. Check the vendor advisory for mitigations.

References

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