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Linux Mint 22.3 Beta Coming This Month

Linux Mint 22.3 ‘Zena’ is readying a beta release for testing, with the distro’s developers aiming to have it out in the first half of December. If it feels a bit “soon” for a new version of Linux Mint to be coming it’s because the release of Linux Mint 22.2 arrived much later than usual. As the distro’s developers don’t want their standard release schedule to slip, and many of the bigger changes planned have been in gestation for a while, there’s no reason to hold back for the sake of it. Amongst changes coming in Linux Mint 22.3 are […]

Linux Journal

Linux Kernel 6.18 Is Out: What’s New and Important

by George Whittaker The stable release of Linux Kernel 6.18 was officially tagged on November 30, 2025. It’s expected to become this year’s major long-term support (LTS) kernel, something many users and distributions care about. Here’s a breakdown of the most significant changes and improvements in this release: Core Improvements: Performance, Memory, Infrastructure The kernel’s memory allocation subsystem gets a major upgrade with “sheaves”, a per-CPU caching layer for slab allocations. This reduces locking overhead and speeds up memory allocation and freeing, improving overall system responsiveness. A new device-mapper target dm-pcache arrives, enabling use of persistent memory (e.g. NVDIMM/CXL) as a cache layer for block devices, useful for systems with fast non-volatile memory, SSDs, or hybrid storage. Overall memory management and swapping performance have been improved, which should help under memory pressure or heavy workloads. Networking & Security Enhancements Networking gets

LWN.net

Let's Encrypt to reduce certificate lifetimes

Let's Encrypt has announced that it will be reducing the validity period of its certificates from 90 days to 45 days by 2028: Most users of Let's Encrypt who automatically issue certificates will not have to make any changes. However, you should verify that your automation is compatible with certificates that have shorter validity periods. To ensure your ACME client renews on time, we recommend using ACME Renewal Information (ARI). ARI is a feature we've introduced to help clients know when they need to renew their certificates. Consult your ACME client's documentation on how to enable ARI, as it differs from client to client. If you are a client developer, check out this integration guide. If your client doesn't support ARI yet, ensure it runs on a schedule that is compatible with 45-day certificates. For example, renewing at a hardcoded interval of 60 days will no longer be sufficient. Acceptable behavior includes renewing certificates at approximately two thirds of the way through t

LWN.net

FreeBSD 15.0 released

FreeBSD 15.0 has been released. Notable changes in this release include a new method for installing the base system using the pkg package manager, an update to OpenZFS 2.4.0-rc4, native support for the inotify(2) interface, and the addition of Open Container Initiative (OCI) images to FreeBSD's release artifacts. See the release notes for a full list of changes, hardware notes for supported hardware, and check the errata before installing or upgrading.