USN-7526-1: Bind vulnerability

Publication date

21 May 2025

Overview

Bind could be made to crash if it received specially crafted network traffic.


Packages

  • bind9 - Internet Domain Name Server

Details

It was discovered that Bind incorrectly handled certain DNS messages with
invalid TSIG. A remote attacker could possibly use this issue to cause Bind
to crash, resulting in a denial of service.

It was discovered that Bind incorrectly handled certain DNS messages with
invalid TSIG. A remote attacker could possibly use this issue to cause Bind
to crash, resulting in 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
25.04 plucky bind9 –  1:9.20.4-3ubuntu1.1
24.10 oracular bind9 –  1:9.20.0-2ubuntu3.2

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.


Have additional questions?

Talk to a member of the team ›