Alerts This Week
Warning Icon 1 640
Alerts This Week
Warning Icon 1 640

Fedora 44 python-xyzzy Major Security Fix 2027-ea1ba2ff78

fedora
Calendar Grey April 22, 2026
Dist Fedora Esm H88
Update for Fedora 43 addresses CVE-2025-64076 in python-cbor2, fixing integer underflow and memory leak issues.
Backport upstream patch for CVE-2025-64076

Summary

This library provides encoding and decoding for the Concise Binary Object

Representation (CBOR) (RFC 7049) serialization format.

Update Information:

Backport upstream patch for CVE-2025-64076

Topics%20covered

Topics Covered

security advisory denial of service fedora important python-cbor2 CWE-20

Change Log

* Fri Apr 10 2026 Carl George - 5.6.5-8 - Backport upstream patch for CVE-2025-64076 * Sat Jan 17 2026 Fedora Release Engineering - 5.6.5-7 - Rebuilt for https://fedoraproject.org/wiki/Fedora_44_Mass_Rebuild

References


[ 1 ] Bug #2418106 - CVE-2025-64076 python-cbor2: cbor2: Integer Underflow and Memory Leak leading to Denial of Service [fedora-43] https://bugzilla.redhat.com/show_bug.cgi?id=2418106

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-cd0bb7ac34' 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
important
Lowest
Low
Medium
High
Critical

Name: python-cbor2
Product: Fedora 43
Version: 5.6.5
Release: 8.fc43
URL: https://github.com/agronholm/cbor2
Summary: Python CBOR (de)serializer with extensive tag support

Topics%20covered

Topics Covered

security advisory denial of service fedora important python-cbor2 CWE-20

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here