USN-8534-1: LibreOffice vulnerabilities

Publication date

13 July 2026

Overview

Several security issues were fixed in LibreOffice.


Packages

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...

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 issue to cause LibreOffice to
crash, resulting in a denial of service, or possibly execute arbitrary
code. (CVE-2026-8356)

It was discovered that LibreOffice Calc incorrectly handled compiling
certain formulas. An attacker could use this issue to cause LibreOffice to
crash, resulting in a denial of service, or possily execute arbitrary code.
(CVE-2026-8357)

It was discovered that LibreOffice Calc incorrectly handled importing
spreadsheet tracked changes. An attacker could use this issue to cause
LibreOffice to crash, resulting in a denial of service, or possibly execute
arbitrary code. (CVE-2026-8358)


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
26.04 LTS resolute libreoffice –  4:26.2.4.2-0ubuntu0.26.04.2
24.04 LTS noble libreoffice –  4:24.2.7-0ubuntu0.24.04.6
22.04 LTS jammy libreoffice –  1:7.3.7-0ubuntu0.22.04.12

Reduce your security exposure

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