Recently, an update to wireshark for F20 was released; bug 1142613. Unless I misunderstand the CVE, wireshark in F21, 1.12.0 is also vulnerable. Doesn't that too need to be updated?
Yes. An update for wireshark-1.12.1-1.fc21 has been pushed to testing. https://admin.fedoraproject.org/updates/wireshark-1.12.1-1.fc21
wireshark-1.12.1-1.fc21 has been submitted as an update for Fedora 21. https://admin.fedoraproject.org/updates/wireshark-1.12.1-1.fc21
Package wireshark-1.12.1-1.fc21: * should fix your issue, * was pushed to the Fedora 21 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing wireshark-1.12.1-1.fc21' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2014-12362/wireshark-1.12.1-1.fc21 then log in and leave karma (feedback).
wireshark-1.12.1-1.fc21 has been pushed to the Fedora 21 stable repository. If problems still persist, please make note of it in this bug report.