Ubuntu 26.04 LTS LibreOffice USN-8534-1 Denial of Service Threat

ubuntu

July 13, 2026

Several security issues were fixed in LibreOffice.

Summary

Several security issues were fixed in LibreOffice.

Software Description:

- libreoffice: Office productivity suite

Details:

It was discovered that LibreOffice incorrectly handled importing DXF

drawings. An attacker could use this issue to cause LibreOffice to crash,

resulting in a denial of service, or possibly execute arbitrary code.

(CVE-2026-6039)

It was discovered that LibreOffice incorrectly handled certain ODF number

formats. An attacker could use this issue to cause LibreOffice to crash,

resulting in a denial of service, or possibly execute arbitrary code. This

issue only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-6040)

It was discovered that LibreOffice incorrectly handled importing EMF+

graphics. An attacker could use this issue to cause LibreOffice to crash,

resulting in a denial of service, or possibly execute arbitrary code.

(CVE-2026-6045)

It was discovered that LibreOffice incorrectly handled importing PPT

presentations. An attacker could use this ...

Read the Full Advisory

Topics Covered

security advisory denial of service update Ubuntu important LibreOffice

Update Instructions

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

Ubuntu 26.04 LTS
  libreoffice                     4:26.2.4.2-0ubuntu0.26.04.2

Ubuntu 24.04 LTS
  libreoffice                     4:24.2.7-0ubuntu0.24.04.6

Ubuntu 22.04 LTS
  libreoffice                     1:7.3.7-0ubuntu0.22.04.12

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