CVE-2026-6040

Publication date 15 June 2026

Last updated 16 July 2026

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.3 · High

Score breakdown

Description

A heap use-after-free existed when importing the blank-width characters of an ODF number format. A position value read from the document was not checked against the length of the format-code string, so a malformed number format could be processed against memory outside that string. In fixed versions the position is bounds-checked before use.

Status

Package Ubuntu Release Status
libreoffice 26.04 LTS resolute
Fixed 4:26.2.4.2-0ubuntu0.26.04.2
25.10 questing Ignored end of life, was needs-triage
24.04 LTS noble
Fixed 4:24.2.7-0ubuntu0.24.04.6
22.04 LTS jammy
Not affected
20.04 LTS focal
Not affected

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
libreoffice

Severity score breakdown

CVSS version:

Base score 5.4 · Medium

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:P

Base score 7.3 · High

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-8534-1
    • LibreOffice vulnerabilities
    • 13 July 2026

Other references

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