CVE-2026-44944
Description
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.
Statement
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.
Mitigation
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.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 7.8 | N/A | N/A |
| Attack Vector | Local | N/A | N/A |
| Attack Complexity | Low | N/A | N/A |
| Privileges Required | Low | N/A | N/A |
| User Interaction | None | N/A | N/A |
| Scope | Unchanged | N/A | N/A |
| Confidentiality | High | N/A | N/A |
| Integrity Impact | High | N/A | N/A |
| Availability Impact | High | N/A | N/A |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Understanding the Weakness (CWE)
Confidentiality,Integrity,Availability,Access Control
Technical Impact: Modify Memory; Read Memory; Execute Unauthorized Code or Commands; Gain Privileges or Assume Identity; Bypass Protection Mechanism; Other
Frequently Asked Questions
Not sure what something means? Check out our Security Glossary.
Want to get errata notifications? Sign up here.
