Read the docs
TI-2026-70050 Aliases CVE-2026-104114

NULL pointer dereference in illumos nwamd lets local users crash it

Priority LOW 23CWE-476Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-476.

Summary

The illumos Network Auto-Magic daemon (nwamd) in illumos-gate from commit 6ba597c5 before commit 0f1064d9 is affected, and OmniOS releases before the fixes r151054bw, r151056aw and r151058w are affected. A NULL pointer dereference (CWE-476) in nwamd_door_switch() writes to the caller's request structure before checking that a request was supplied. An unprivileged local user can crash the daemon, and repeated crashes put the nwam network service into maintenance, stopping automatic network configuration. The service runs only when enabled, which is not the default.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00116 1st percentileScored 2026-11-07
Fix Fixed OmniOS (OmniOS): r151058w, r151056aw, r151054bw

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OmniOSOmniOSany to before r151054; r151058 to before r151058w; r151056 to before r151056aw; r151054 to before r151054bwr151058w, r151056aw, r151054bwPatch availableCNA
  • OmniOS VendorOmniOS Affected any to before r151054; r151058 to before r151058w; r151056 to before r151056aw; r151054 to before r151054bw Fixed in r151058w, r151056aw, r151054bw Patch available CNA

Remediation

Update illumos-gate to commit 0f1064d9 or later. For OmniOS, install r151058w, r151056aw, or r151054bw, matching your release branch.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA OmniOS (OmniOS) Fixed in r151058w, r151056aw, r151054bw

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    OmniOS r151054, r151054bw and 2 more versions

    7 records Highest priority Priority LOW 7 LOW

    Other records, highest priority first

    • TI-2026-70048 Unreleased file descriptors in illumos nscd exhaust kernel memoryPriority LOW 29
    • TI-2026-70046 Reachable assertion in illumos bhyve lets guest panic hostPriority LOW 29
    • TI-2026-70051 Stack buffer overflow in illumos reparsed lets local users crash itPriority LOW 23
    Show all 7 records →

Timeline

  1. 2026-10-09 Threatist record created from CVE-2026-104114

References

Patch 1

Other 2

  • TI-2012-00210 The x86-64 kernel system-call functionality in Xen 4.1.2 and earlier, as used in Citrix… CVSS 2.0HIGH 7.2
  • TI-2021-19340 An issue was discovered in illumos before f859e7171bb5db34321e45585839c6c3200ebb90… CVSS 3.1MEDIUM 5.5
  • TI-2026-12978 SCTP needs to better-check INIT ACK chunk parameters CVSS 4.0CRITICAL 9.1
  • TI-2020-16788 An issue was discovered in illumos before 2020-10-22, as used in OmniOS before r151030by… CVSS 3.1CRITICAL 9.8
  • TI-2016-05624 Improper input validation in illumos osnet-incorporation CVSS 3.0HIGH 8.6
  • TI-2019-06998 An issue was discovered in Illumos in Nexenta NexentaStor 4.0.5 and 5.1.2, and other… CVSS 3.1HIGH 8.1
See all 15 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences