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[USN-8436-1] ca-certificates update

Posted on 16 June 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8436-1
June 16, 2026

ca-certificates update
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 26.04 LTS
- Ubuntu 25.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS

Summary:

The CA certificates in the ca-certificates package were updated.

Software Description:
- ca-certificates: Common CA certificates

Details:

The ca-certificates package contained outdated CA certificates. This update
refreshes the included certificates to those contained in the 2.86 version
of the Mozilla certificate authority bundle.

Update instructions:

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

Ubuntu 26.04 LTS
ca-certificates 20260601~26.04.1

Ubuntu 25.10
ca-certificates 20260601~25.10.1

Ubuntu 24.04 LTS
ca-certificates 20260601~24.04.1

Ubuntu 22.04 LTS
ca-certificates 20260601~22.04.1

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

References:
https://ubuntu.com/security/notices/USN-8436-1
https://launchpad.net/bugs/2156786

Package Information:
https://launchpad.net/ubuntu/+source/ca-certificates/20260601~26.04.1
https://launchpad.net/ubuntu/+source/ca-certificates/20260601~25.10.1
https://launchpad.net/ubuntu/+source/ca-certificates/20260601~24.04.1
https://launchpad.net/ubuntu/+source/ca-certificates/20260601~22.04.1

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