[USN-8352-1] LibreOffice vulnerability

[noreply+usn-bot at canonical.com]

==========================================================================
Ubuntu Security Notice USN-8352-1
June 01, 2026

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

- Ubuntu 26.04 LTS
- Ubuntu 25.10

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 26.04 LTS
  libreoffice                     4:26.2.3.2-0ubuntu0.26.04.1

Ubuntu 25.10
  libreoffice                     4:25.8.7-0ubuntu0.25.10.1

This update uses a new upstream release, which includes additional bug
fixes. In general, a standard system update will make all the necessary
changes.

References:
  https://ubuntu.com/security/notices/USN-8352-1
  CVE-2026-4430

Package Information:
  https://launchpad.net/ubuntu/+source/libreoffice/4:26.2.3.2-0ubuntu0.26.04.1
  https://launchpad.net/ubuntu/+source/libreoffice/4:25.8.7-0ubuntu0.25.10.1
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