Vulnerability · Published Oct 9, 2026 · Assigned by illumos
CVE-2026-104114NULL pointer dereference in illumos nwamd door handler allows local users to crash the daemon
Medium 5.4
In plain English
A medium-severity null pointer dereference in illumos-gate from illumos. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 2% of all known vulnerabilities).
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| illumos | illumos-gate | 6ba597c56d749c61b4f783157f63196d7b2445f0 – before 0f1064d97f1a43778ddf87d4e438b99872aed1a0 |
| OmniOS | OmniOS | any – before r151054r151058 – before r151058wr151056 – before r151056awr151054 – before r151054bw |
Weakness: CWE-476 · Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P
References
- https://illumos.topicbox.com/groups/developer/T3b859664594b7762/cve-2026-104112-to-cve-2026-104117-denial-of-service-and-missing-authorization-in-door-servers mailing-list
- https://illumos.org/issues/18495 issue-tracking
- https://github.com/illumos/illumos-gate/commit/0f1064d97f1a43778ddf87d4e438b99872aed1a0 patch