Loop with Unreachable Exit Condition ('Infinite Loop') Affecting open-iscsi package, versions <2.1.8-1+deb12u1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.21% (11th percentile)

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  • Snyk IDSNYK-ECHOLATEST-OPENISCSI-18867013
  • published17 Aug 2026
  • disclosed12 Aug 2026

Introduced: 12 Aug 2026

CVE-2026-18726  (opens in a new tab)
CWE-835  (opens in a new tab)

How to fix?

Upgrade Echo:latest open-iscsi to version 2.1.8-1+deb12u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream open-iscsi package and not the open-iscsi package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

A flaw was found in open-iscsi. This vulnerability allows a remote attacker on the same local network segment to cause a Denial of Service (DoS) in the iscsiuio daemon. By sending a specially crafted Internet Control Message Protocol version 6 (ICMPv6) Router Advertisement with a zero-length option, the attacker can trigger an infinite loop. This leads to sustained CPU usage, rendering the daemon unresponsive and impacting system availability. A secondary risk of out-of-bounds reads exists with a short IPv6 payload, though no memory corruption or data exposure has been confirmed.

CVSS Base Scores

version 3.1