This update ships updated CPU microcode for CFL-S (Coffe Lake Desktop) models of Intel CPUs which were not yet included in the Intel microcode update released as ELA-200-1. For details please refer to
Additionally this update rolls back CPU microcode for HEDT and Xeon processors with signature 0x50654 which were affected by a regression causing hangs on warm reboots (Cf. #946515).
For Debian 7 Wheezy, these problems have been fixed in version 3.20191115.2~deb7u1.
We recommend that you upgrade your intel-microcode packages.
Further information about Extended LTS security advisories can be found in the dedicated section of our website.