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Alerts This Week
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Fedora 42 Wireshark Update 4.6.4 Fixes Critical Memory Issues

fedora
Calendar Grey March 15, 2026
Dist Fedora Esm H88
Update to Wireshark 4.6.4 on Fedora 42 to address critical issues including memory allocation and buffer over-read.
New version 4.6.4

Summary

Wireshark allows you to examine protocol data stored in files or as it is

captured from wired or wireless (WiFi or Bluetooth) networks, USB devices,

and many other sources. It supports dozens of protocol capture file formats

and understands more than a thousand protocols.

It has many powerful features including a rich display filter language

and the ability to reassemble multiple protocol packets in order to, for

example, view a complete TCP stream, save the contents of a file which was

transferred over HTTP or CIFS, or play back an RTP audio stream.

Update Information:

New version 4.6.4

Topics%20covered

Topics Covered

security advisory fedora null pointer memory allocation wireshark buffer over-read

Change Log

* Wed Mar 4 2026 Michal Ruprich - 1:4.6.4-1 - New version 4.6.4

References


[ 1 ] Bug #2442699 - CVE-2026-3201 wireshark: Improperly Controlled Sequential Memory Allocation in Wireshark [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2442699 [ 2 ] Bug #2442701 - CVE-2026-3202 wireshark: NULL Pointer Dereference in Wireshark [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2442701 [ 3 ] Bug #2442705 - CVE-2026-3203 wireshark: Buffer Over-read in Wireshark [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2442705 [ 4 ] Bug #2442866 - wireshark-4.6.4 is available https://bugzilla.redhat.com/show_bug.cgi?id=2442866

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-a92f2096cd' 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
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Name: wireshark
Product: Fedora 42
Version: 4.6.4
Release: 1.fc42
URL: http://www.wireshark.org/
Summary: Network traffic analyzer

Topics%20covered

Topics Covered

security advisory fedora null pointer memory allocation wireshark buffer over-read

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