linux-latest (76) unstable; urgency=medium * From Linux 4.8, several changes have been made in the kernel configuration to 'harden' the system, i.e. to mitigate security bugs. Some changes may cause legitimate applications to fail, and can be reverted by run-time configuration: - On most architectures, the /dev/mem device can no longer be used to access devices that also have a kernel driver. This breaks dosemu and some old user-space graphics drivers. To allow this, set the kernel parameter: iomem=relaxed - The kernel log is no longer readable by unprivileged users. To allow this, set the sysctl: kernel.dmesg_restrict=0 -- Ben Hutchings Sat, 29 Oct 2016 02:05:32 +0100 linux-latest (75) unstable; urgency=medium * From Linux 4.7, the iptables connection tracking system will no longer automatically load helper modules. If your firewall configuration depends on connection tracking helpers, you should explicitly load the required modules. For more information, see . -- Ben Hutchings Sat, 29 Oct 2016 01:53:18 +0100