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Fedora 43 mupdf Critical Out-of-Bounds Read Fix Advisory 2026-8870088088

fedora
Calendar Grey July 24, 2026
Scroller Fedora
This update addresses a critical out-of-bounds read issue in MuPDF on Fedora 43, ensuring data security and integrity.
Fedora has released an update for MuPDF version 1.27.2 to fix CVE-2026-7233, an issue related to out-of-bounds read, enhancing security in the PDF viewer toolkit.

Summary

MuPDF is a lightweight PDF viewer and toolkit written in portable C.

The renderer in MuPDF is tailored for high quality anti-aliased

graphics. MuPDF renders text with metrics and spacing accurate to

within fractions of a pixel for the highest fidelity in reproducing

the look of a printed page on screen.

MuPDF has a small footprint. A binary that includes the standard

Roman fonts is only one megabyte. A build with full CJK support

(including an Asian font) is approximately seven megabytes.

MuPDF has support for all non-interactive PDF 1.7 features, and the

toolkit provides a simple API for accessing the internal structures of

the PDF document. Example code for navigating interactive links and

bookmarks, encrypting PDF files, extracting fonts, images, and

searchable text, and rendering pages to image files is provided.

Update Information:

fix CVE-2026-7233 (rhbz#2463402)

Topics%20covered

Topics Covered

security advisory fedora critical information disclosure out-of-bounds read mupdf

Change Log

* Thu Jul 16 2026 Michael J Gruber - 1.27.2-2 - fix CVE-2026-7233 (rhbz#2463402)

References


[ 1 ] Bug #2463402 - CVE-2026-7233 mupdf: Artifex MuPDF: Information disclosure due to out-of-bounds read [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2463402

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-8870088088' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

Severity
critical
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Name: mupdf
Product: Fedora 43
Version: 1.27.2
Release: 2.fc43
URL: http://mupdf.com/
Summary: A lightweight PDF viewer and toolkit

Topics%20covered

Topics Covered

security advisory fedora critical information disclosure out-of-bounds read mupdf

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