OpenSSH released a fix for a memory corruption with AES-GCM ciphers in OpenSSH 6.2 and 6.3.
Their advisory is here: http://www.openssh.com/txt/gcmrekey.adv If you're using Subversion in a svn+ssh:// configuration that restrictions on the command being run using the command field in the authorized_keys file it may be possible to bypass this restriction. This Subversion configuration is described in the SVN Book here: http://svnbook.red-bean.com/en/1.7/svn.serverconfig.svnserve.html#svn.serverconfig.svnserve.sshtricks
