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kpatch is a feature of the Linux kernel that implements live patching of a running kernel, which allows kernel patches to be applied while the kernel is still running. By avoiding the need for rebooting the system with a new kernel that contains the desired patches, kpatch aims to maximize the system uptime and availability.
This allows drivers and devices outside of the mainline kernel to continue working after a Linux kernel upgrade. [3] Another benefit of DKMS is that it allows the installation of a new driver on an existing system, running an arbitrary kernel version, without any need for manual compilation or precompiled packages provided by the vendor.
An evaluation against Linux kernel security patches from May 2005 to May 2008 found that Ksplice was able to apply fixes for all the 64 significant kernel vulnerabilities discovered in that interval. In 2009, major Linux vendors asked their customers to install a kernel update more than once per month. [10]
It is based on Debian 11.5 (Bullseye) and is available as Xfce, Xfce AHS, [14] KDE, and Fluxbox versions. Includes Debian's recent Grub-PC updates. Further details are in the MX blog. [15] MX-21.3 3rd refresh of MX-21, was released on 14 January 2023. Based on Debian 11.6 with bug fixes, new kernels, and many application updates.
The new kernel will usually expect all hardware devices to be in a well defined state, in which they are after a system reboot because the system firmware resets them to a "sane" state. Bypassing a real reboot may leave devices in an unknown state, and the new kernel will have to recover from that.
The patch is compiled as usual, but the generated code has additional information about all changed code pieces caused by original source code modification and information on to how to apply these code pieces. The resulting code modifications are safely applied to the running kernel. A special KernelCare kernel module applies the patches. It ...
Debian 12 was released on June 10, 2023, including various improvements and features, increasing the supported Linux Kernel to version 6.1, and leveraging new "Emerald" artwork. [75] Debian is still in development and new packages are uploaded to unstable every day. [76]
According to Linus Torvalds, "one of the largest kernel releases we've ever had" [21] 6.6 30 October 2023 [1] 6.6.71 [10] December 2026 The new EEVDF process scheduler was merged. It aims to replace the CFS scheduler. Intel Shadow Stack was finally merged; Exploiting ROPs is now harder