Bug 2540067 - CVE-2026-63275 libreoffice: stack buffer overflow in CFF font hint handling [fedora-all]
Summary: CVE-2026-63275 libreoffice: stack buffer overflow in CFF font hint handling [...
Keywords:
Status: NEW
Alias: None
Product: Fedora
Classification: Fedora
Component: libreoffice
Version: rawhide
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: libreoffice-sig
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["d44e86b3-8844-4531-a3bb-b...
Depends On:
Blocks: CVE-2026-63275
TreeView+ depends on / blocked
 
Reported: 2026-09-24 13:47 UTC by Guilherme de Almeida Suckevicz
Modified: 2026-09-24 13:47 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Type: ---
Embargoed:


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Description Guilherme de Almeida Suckevicz 2026-09-24 13:47:36 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

LibreOffice can read CFF fonts, which may be embedded in documents. A stack buffer overflow existed when reading the hints of a glyph. The number of hints was checked against the wrong bound, so a glyph declaring more hints than the array can hold wrote past its end. In fixed versions the hint count is checked against the capacity the array really has.


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