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Fedora 42 OpenCC Critical CVE-2025-15536 Heap Overflow Advisory 2026

fedora
Calendar Grey February 1, 2026
Dist Fedora Esm H88
Critical security advisory for Fedora 42 users to address CVE-2025-15536 affecting opencc, a Chinese conversion library.
Fix CVE-2025-15536

Summary

OpenCC is a library for converting characters and phrases between

Traditional Chinese and Simplified Chinese.

Update Information:

Fix CVE-2025-15536

Topics%20covered

Topics Covered

security advisory fedora critical heap overflow CVE opencc

Change Log

* Thu Jan 22 2026 Peng Wu - 1.1.9-2 - Add opencc-fixes-CVE.patch - Resolves: RHBZ#2430838

References


[ 1 ] Bug #2430838 - CVE-2025-15536 opencc: BYVoid OpenCC MaxMatchSegmentation.cpp MaxMatchSegmentation heap-based overflow [fedora-42] https://bugzilla.redhat.com/show_bug.cgi?id=2430838

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-5829e53bd7' 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
Lowest
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Critical

Name: opencc
Product: Fedora 42
Version: 1.1.9
Release: 2.fc42
URL: https://github.com/BYVoid/OpenCC
Summary: Libraries for Simplified-Traditional Chinese Conversion

Topics%20covered

Topics Covered

security advisory fedora critical heap overflow CVE opencc

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