USN-8807-1: Open-iSNS vulnerability

Publication date

23 September 2026

Overview

Open-iSNS could be made to crash if it received specially crafted network traffic.


Packages

  • open-isns - Open Source iSNS implementation

Details

It was discovered that Open-iSNS contained a double-free vulnerability when
decoding malformed iSNS attributes. An unauthenticated attacker could possibly
use this to cause a denial of service.

It was discovered that Open-iSNS contained a double-free vulnerability when
decoding malformed iSNS attributes. An unauthenticated attacker could possibly
use this to cause a denial of service.

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
26.04 LTS resolute libisns0t64 –  0.101-2.1ubuntu0.1
24.04 LTS noble libisns0t64 –  0.101-0.3ubuntu0.1
22.04 LTS jammy libisns0 –  0.101-0ubuntu2.1
20.04 LTS focal libisns0 –  0.97-3ubuntu0.1~esm1  
18.04 LTS bionic libisns0 –  0.97-2ubuntu0.1~esm1  

Reduce your security exposure

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