Python 2.7.9 is now in the Proposed for Ubuntu Vivid. My guess is that they are rebuilding/checking libraries and applications to verify they are still working as expected with the newer version, before pushing it to the main archives.
As for backporting to older releases I don't know, but it should be possible to add a request once the package has landed in Vivid.
Not familiar with the CVEs, but if possible those should maybe be patched for older releases as well.
Python 2.7.9 is now in the Proposed for Ubuntu Vivid. My guess is that they are rebuilding/checking libraries and applications to verify they are still working as expected with the newer version, before pushing it to the main archives.
As for backporting to older releases I don't know, but it should be possible to add a request once the package has landed in Vivid.
Not familiar with the CVEs, but if possible those should maybe be patched for older releases as well.