** Description changed: - <Placeholder bug for enabling CONFIG_IO_STRICT_DEVMEM> + We should enable CONFIG_IO_STRICT_DEVMEM to restrict userspace access of + active io-memory ranges. + + This could impact kernel debugability. In that case, you may reboot with + iomem=relaxed on the kernel commandline to override this setting. + + + This config option is recommended by the Kernel Self Protection Project[1] and a 2019 study performed by Capsule 8 shows that it is enabled in many other major distro kernels[2]. + + [1] https://kernsec.org/wiki/index.php/Kernel_Self_Protection_Project/Recommended_Settings + [2] https://capsule8.com/blog/millions-of-binaries-later-a-look-into-linux-hardening-in-the-wild/
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1855338 Title: CONFIG_IO_STRICT_DEVMEM should be enabled To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1855338/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
