USN-8325-1: tgt vulnerability

Publication date

27 May 2026

Overview

tgt could be made to generate an identical sequence of challenges.


Packages

  • tgt - Linux SCSI target user-space daemon

Details

It was discovered that tgt incorrectly tried to achieve entropy by calling
rand without srand. An attacker could possibly use this issue to make tgt
generate an identical sequence of challenges, resulting in authentication
bypass.

It was discovered that tgt incorrectly tried to achieve entropy by calling
rand without srand. An attacker could possibly use this issue to make tgt
generate an identical sequence of challenges, resulting in authentication
bypass.

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
24.04 LTS noble tgt –  1:1.0.85-1.1ubuntu6+esm1  
22.04 LTS jammy tgt –  1:1.0.80-1ubuntu2+esm1  
18.04 LTS bionic tgt –  1:1.0.72-1ubuntu1+esm1  
16.04 LTS xenial tgt –  1:1.0.63-1ubuntu1.1+esm1  
14.04 LTS trusty tgt –  1:1.0.43-0ubuntu4.1~14.04.3+esm1  

Reduce your security exposure

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