Copyright © 2012 Red Hat, Inc. All rights reserved. Important 2026-07-29T13:04:50 open-iscsi: open-iscsi: Authentication bypass in iscsiuio control socket 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CWE-1220

An Incorrect Authorization vulnerability in open-iscsi allows unprivilidged local users to use the isscsiuio control socket. This issue affects open-iscsi: from ? through 668ca1df9c9a1e9bdd5c999ae1d67c9c8909237e.

A flaw was found in open-iscsi. An incorrect authorization vulnerability allows unprivileged local users to bypass authentication for the iscsiuio control socket. This enables unauthorized access to the control socket, potentially leading to system compromise or disruption of iSCSI (Internet Small Computer System Interface) operations.

Important: This flaw in open-iscsi allows unprivileged local users to bypass authentication for the `iscsiuio` control socket. This could lead to unauthorized access and manipulation of iSCSI sessions, potentially compromising data confidentiality, integrity, and availability on systems where iSCSI is configured. If iSCSI offload engine functionality is not required, the `iscsiuio` service can be disabled to prevent exploitation. This action will stop the service immediately and prevent it from starting on subsequent reboots. To disable the `iscsiuio` service: ```bash sudo systemctl disable --now iscsiuio.service sudo systemctl mask iscsiuio.service ``` *Disabling this service will impact any systems relying on iSCSI offload engines. A system restart or service reload may be required for the changes to take full effect. Red Hat Enterprise Linux 10 2026-08-11T00:00:00Z RHSA-2026:53845 iscsi-initiator-utils-0:6.2.1.11-1.git4b3e853.el10_2.2 Red Hat Enterprise Linux 9 Affected iscsi-initiator-utils https://www.cve.org/CVERecord?id=CVE-2026-44944 https://nvd.nist.gov/vuln/detail/CVE-2026-44944 https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-44944 https://github.com/open-iscsi/open-iscsi/commit/668ca1df9c9a1e9bdd5c999ae1d67c9c8909237e