Integer Underflow Affecting iscsi-initiator-utils-iscsiuio package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.19% (9th percentile)

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  • Snyk IDSNYK-RHEL10-ISCSIINITIATORUTILSISCSIUIO-18746594
  • published13 Aug 2026
  • disclosed12 Aug 2026

Introduced: 12 Aug 2026

CVE-2026-18728  (opens in a new tab)
CWE-191  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:10 iscsi-initiator-utils-iscsiuio.

NVD Description

Note: Versions mentioned in the description apply only to the upstream iscsi-initiator-utils-iscsiuio package and not the iscsi-initiator-utils-iscsiuio package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

A flaw was found in open-iscsi. An integer underflow vulnerability in the iscsiuio component, specifically during IPv4 Dynamic Host Configuration Protocol (DHCP) parsing, allows a remote attacker on the same local network segment to cause a denial of service. By sending a specially crafted IPv4/UDP DHCP reply, the attacker can trigger an out-of-bounds read, leading to the iscsiuio process crashing. This issue affects systems where iscsiuio is actively handling IPv4 DHCP traffic.

CVSS Base Scores

version 3.1