It's a good thing we are naming all of our vulnerabilities now; it's easier to keep track of them. I haven't seen an official designation for CVE-2014-6271, but Shellshock seems appropriate. This ...
Hotfix-BIGIP-11.5.1.5.0.147-HF5 has been released to address these CVEs.
It is available at http://downloads.f5.com
SOL15629 will be republished to reflect this hotfix release shortly.