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[USN-8340-1] LibreOffice vulnerability

Posted on 28 May 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8340-1
May 28, 2026

libreoffice vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS

Summary:

LibreOffice could be made to crash or run programs as your login if it
opened a specially crafted file.

Software Description:
- libreoffice: Office productivity suite

Details:

Duc Anh Nguyen discovered that LibreOffice incorrectly handled mismatched
encryption salt parameters in crafted OOXML documents. An attacker could
use this issue to cause LibreOffice to crash, resulting in a denial of
service, or possibly execute arbitrary code.

Update instructions:

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

Ubuntu 24.04 LTS
libreoffice 4:24.2.7-0ubuntu0.24.04.5

Ubuntu 22.04 LTS
libreoffice 1:7.3.7-0ubuntu0.22.04.11

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

References:
https://ubuntu.com/security/notices/USN-8340-1
CVE-2026-4430

Package Information:
https://launchpad.net/ubuntu/+source/libreoffice/4:24.2.7-0ubuntu0.24.04.5
https://launchpad.net/ubuntu/+source/libreoffice/1:7.3.7-0ubuntu0.22.04.11

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