On Tue, Mar 21, 2017 at 02:57:56PM -0400, Kei Kebreau wrote:
> * gnu/packages/scheme.scm (chicken): Update to 4.12.0.

Can you try cherry-picking the upstream fix for CVE-2017-6949?

http://lists.gnu.org/archive/html/chicken-announce/2017-03/msg00000.html
http://seclists.org/oss-sec/2017/q1/634