CVE-2026-104113: Double free in OmniOS and SmartOS ipmgmtd 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-415

Description

A double free in the IP management daemon (ipmgmtd) of OmniOS and SmartOS allows a local user to crash the daemon. When authorizing a door request that modifies interface configuration, ipmgmt_handler() in usr/src/cmd/cmd-inet/lib/ipmgmtd/ipmgmt_door.c frees the caller's credential with ucred_free() immediately after reading the user ID, and frees it a second time on the error path if the authorization check fails. An unprivileged local user who does not hold the solaris.network.interface.config authorization can send such a request, for example IPMGMT_CMD_RESETIF, to the ipmgmtd door, causing ipmgmtd to abort; repeated requests place the svc:/network/ip-interface-management service into maintenance, preventing IP interface configuration. The early free was introduced in 2014 to support lx-branded zones (OmniOS commit 4c170900) and is not present in upstream illumos-gate. It affects OmniOS r151020 and later, and SmartOS, prior to the fix.

Affected products

OmniOS: from r151020 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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