Fedora 43 munge 0.5.18 Critical Buffer Overflow CVE-2026-25506
fedora
February 26, 2026
Update to 0.5.18, resolve CVE-2026-25506
Summary
MUNGE (MUNGE Uid 'N' Gid Emporium) is an authentication service for creating
and validating credentials. It is designed to be highly scalable for use
in an HPC cluster environment.
It allows a process to authenticate the UID and GID of another local or
remote process within a group of hosts having common users and groups.
These hosts form a security realm that is defined by a shared cryptographic
key. Clients within this security realm can create and validate credentials
without the use of root privileges, reserved ports, or platform-specific
methods.
Update Information:
Update to 0.5.18, resolve CVE-2026-25506
Topics Covered
Change Log
* Fri Feb 13 2026 Michal Schmidt
References
[ 1 ] Bug #2414773 - munge-0.5.18 is available
https://bugzilla.redhat.com/show_bug.cgi?id=2414773
[ 2 ] Bug #2438833 - CVE-2026-25506 munge: MUNGE has a buffer overflow in message unpacking allows key leakage and credential forgery [fedora-43]
https://bugzilla.redhat.com/show_bug.cgi?id=2438833
Update Instructions
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-ec8baadd48' 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
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Severity
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Name: munge
Product: Fedora 43
Version: 0.5.18
Release: 1.fc43
Summary: Enables uid & gid authentication across a host cluster
Topics Covered
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