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Fedora 34: 2021-22efb0g988 Major Issue: Use After Free in poppler

fedora
Calendar Grey March 5, 2021
Dist Fedora Esm H88
Essential patch for Fedora 33 mupdf addressing double free vulnerability, improving PDF safety. Update using dnf.
CVE-2021-3407

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 five 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.

CVE-2021-3407

* Tue Feb 23 2021 Michael J Gruber - 1.18.0-5

- CVE-2021-3407 (bz #1931964, bz#1931965)

* Tue Jan 26 2021 Michael J Gruber - 1.18.0-4

- (original date: Thu Oct 29 2020)

- remove obsolete patch

* Tue Jan 26 2021 Fedora Release Engineering - 1.18.0-3

- Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild

[ 1 ] Bug #1931964 - CVE-2021-3407 mupdf: Double free of object during linearization

https://bugzilla.redhat.com/show_bug.cgi?id=1931964

su -c 'dnf upgrade --advisory FEDORA-2021-572bb0f886' at the command

line. For more information, refer to the dnf documentation available at

https://dnf.readthedocs.io/en/latest/command_ref.html

All packages are signed with the Fedora Project GPG key. More details on the

GPG keys used by the Fedora Project can be found at

https://fedoraproject.org/security/

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Change Log

References

Update Instructions

Severity
critical
Lowest
Low
Medium
High
Critical

Product: Fedora 33
Version: 1.18.0
Release: 5.fc33
Summary: A lightweight PDF viewer and toolkit

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