Fedora 42: libpcap Medium Memory Corruption CVE-2025-11961 Advisory
fedora
January 21, 2026
New version 1.10.6
Summary
Libpcap provides a portable framework for low-level network
monitoring. Libpcap can provide network statistics collection,
security monitoring and network debugging. Since almost every system
vendor provides a different interface for packet capture, the libpcap
authors created this system-independent API to ease in porting and to
alleviate the need for several system-dependent packet capture modules
in each application.
Install libpcap if you need to do low-level network traffic monitoring
on your network.
Update Information:
New version 1.10.6
Topics Covered
Change Log
* Mon Jan 5 2026 Michal Ruprich
References
[ 1 ] Bug #2426393 - libpcap-1.10.6 is available
https://bugzilla.redhat.com/show_bug.cgi?id=2426393
[ 2 ] Bug #2426630 - CVE-2025-11961 libpcap: libpcap: Memory corruption via malformed MAC-48 address input [fedora-42]
https://bugzilla.redhat.com/show_bug.cgi?id=2426630
[ 3 ] Bug #2426631 - CVE-2025-11961 libpcap: libpcap: Memory corruption via malformed MAC-48 address input [fedora-43]
https://bugzilla.redhat.com/show_bug.cgi?id=2426631
Update Instructions
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-1e3425e7ea' 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
important
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Critical
Name: libpcap
Product: Fedora 42
Version: 1.10.6
Release: 1.fc42
Summary: A system-independent interface for user-level packet capture
Topics Covered
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