A security issue affects Ubuntu 24.04 LTS, causing vulnerabilities in the Linux kernel's cryptographic API, SMB network file system, and io_uring subsystem. These vulnerabilities could potentially be exploited by an attacker to compromise the system. The issue was addressed through a kernel update that corrects these flaws, making it essential for users to upgrade their systems immediately.
[USN-8015-3] Linux kernel (FIPS) vulnerabilities
Linux Kernel 6.12.69 has been released alongside earlier stable branches such as 5.10.249, 5.15.199, 6.1.162, and 6.6.123, bringing a wide array of bug fixes and feature refinements across the kernel. The log shows improvements to bpf self‑tests, RDMA device handling under Hyper‑V, pinctrl driver changes for Qualcomm SoCs, AMDGPU queue resets, and a critical writeback CPU‑usage fix that stops infinite busy loops when the dirtytime interval is zero. Additional updates touch networking, memory safety, and hardware drivers—including cgroup UAF fixes, NVMe race condition resolution, improved DMA pool handling, and various driver-specific patches for devices such as Intel NICs, NVIDIA GPUs, Qualcomm modems, and Bluetooth stacks. Altogether, this release strengthens kernel stability, performance, and security while expanding support for a broad spectrum of hardware platforms.
The latest point release of the Linux kernel, version 6.18.9, arrives with a focused set of patches that tighten stability and eliminate subtle bugs across many subsystems. It cleans up crashes from driver races in AMDGPU, Intel Xe, and network devices like mlx5e while also correcting misleading error counters on Intel NICs and fixing memory leaks in bcache, btrfs, and NFC routines. Network stack improvements include an MPTCP patch that stops duplicate SUB_CLOSED events and a change to the ice driver that correctly classifies UDP checksum errors, ensuring more accurate link statistics. With no new features added, this concise update is ideal for servers or DIY routers that need safer, quieter operation without pulling in extra code.
Linus Torvalds released the eighth release candidate for Linux 6.19, a quiet update that adds only minor driver tweaks and a handful of bug fixes but no new features. The changes include removing a duplicate ice driver, tightening up mlx5e and other networking subsystems to avoid race conditions or memory leaks, and improving the reliability of a self‑test on older hardware. Users with Wi‑Fi, AMDGPU GPUs or heavy networking workloads may notice fixes for kernel panics from rapid power toggles, more robust wptr reset logic, and reduced memory leakage under load; testing involves checking dmesg logs after booting the new kernel.
Linux Kernel 6.6.122 has been released, featuring bug fixes and enhancements that address various issues with network device drivers, CPU states, wireless drivers, graphics, and filesystems. A notable fix addresses the phylib state machine in network devices, which now correctly handles suspend and resume operations to prevent unnecessary state machine operations and potential crashes. Other updates include improvements to guest XSAVE state handling on x86 systems, fixes for memory leaks in AMDGPU and NTFS3 file systems, and a patch for a crash-causing issue with the ath11k driver. The latest kernel is available for download from the official Linux kernel website, along with documentation of its changes.
The Linux Kernel version 6.12.68 has been released with numerous bug fixes and enhancements. This release addresses several issues, including a previous problem with communication performance regression in vsock/virtio network modules, which has been fixed by using the skb_copy_datagram_from_iter_full() function to properly reset data when errors occur. In addition to this fix, other notable changes include improvements in filesystem security, prevention of potential slowdowns caused by scheduling glitches, and fixes for bitfield write issues in Btrfs. The release also includes extra checking in tests and cleaning up device tree source files to prepare for driver rebinding situations.
Linux Kernel 6.18.8 has been released, featuring several important bug fixes and performance enhancements. The release includes a significant fix for virtual memory management during forks, ensuring that potential security issues are addressed. Another notable change addresses a spurious interrupt problem in the Renesas RZ/V2H(P) driver, which was causing issues during system resume from idle. In addition to these headline fixes, several smaller tweaks and comment cleanups have been integrated into this kernel release.
Linus Torvalds has released the seventh release candidate for Linux Kernel 6.19, marking a significant step towards its final form. Despite the holidays approaching, work on the next release candidate is already underway to allow for more testing and refinement time. The latest build includes driver updates and miscellaneous bug fixes across various subsystems, contributing to stability and a relatively smooth path to 6.19's release. With over three hundred commits from numerous contributors in just a few days, the team behind this effort has been putting in serious hours to thoroughly test everything, with RC7 looking solid overall.
Linux Kernel version 6.12.67 has been released with various improvements to system performance and stability. The new kernel includes fixes for specific issues, such as handling no SRAT data available for NUMA node configuration and PCP corruption when SMP is turned off. Additionally, memory management performance has been enhanced through the batching of page freeing operations and a revamped refresh_cpu_vm_stats function. Several other bugs have also been repaired, including issues with device interrupt requests and clock leaks in the fsl-edma driver.
The Linux kernel version 6.18.7 has been released with several key updates aimed at improving stability and performance. One change addresses potential memory corruption issues in systems using multiple processors by updating how locks are acquired, specifically through the use of spin_lock_irqsave(). Another update optimizes page freeing within the decay_pcp_high function, now using batching to prevent resource hogs that could stall system components. Additionally, a previous update related to functionfs was reversed to address compatibility issues and prevent disruptions on some Android devices.
Deepin Linux 25.0.10 has been released with several updates designed to make the operating system smoother and more efficient. The file manager has undergone a comprehensive overhaul, featuring automatic scrolling, group display options, pinned tabs, and improved visual feedback to help users navigate directories more easily. Additionally, the app store now displays information in an updated format, while the Deepin Desktop Environment (DDE) feels snappier with responsive taskbar icons and improved login times after sleep. The new version also includes AI-powered screenshot tools, input method integrations, and bug fixes to address stability issues related to system startup and ongoing file management tasks.
The 4MLinux team has released beta version 51.0 for wider testing, incorporating numerous updates and improvements to the essential functions of the main release. According to their roadmap, significant developments are imminent, with a focus on resolving issues in this beta version before proceeding to a full release.
Linux Kernel 6.12.66, a long-term support release, has been made available to the public, marking another milestone in its ongoing development. This version fixes various issues, including a memory leak in the bpf_prog_test_run_xdp() function, thanks to a patch that properly cleans up memory used earlier during setup. Additionally, fixes have been made to improve the HDA controller probing process for Intel sound cards, addressing cases where one driver might incorrectly load or fail on certain setups. Other contributors have also made several fixes and tweaks throughout the kernel to improve its stability and functionality.
Linux has released several new Long Term Support (LTS) kernel versions, including Linux 5.15.198, Linux 5.10.248, Linux 6.1.161, and Linux 6.6.121.
Linux kernel 5.15.198 released
Linux kernel 5.10.248 released
Linux kernel 6.1.161 released
Linux kernel 6.6.121 released
Linux Kernel 6.18.6 has been released, featuring various bug fixes and improvements contributed by the kernel community. The release includes fixes for several areas, including the Cadence Quasi-SPI driver, which resolved a race condition that could cause lost completion signals, and the SCSI side's sg subsystem, which was experiencing bogus elapsed times due to two separate race conditions. Other notable changes include enabling woofer speakers on Medion NM14LNL systems, improving support for devices handling DSD format, and addressing issues in the CAN network stack, block driver area, and powercap.
Linus Torvalds has announced the sixth release candidate for Linux Kernel 6.19, which is slightly larger than usual due to a backlog of work from the holiday season or random fluctuations in pull request timings. The kernel appears stable but still needs thorough testing before being called stable. This release candidate features significant updates to drivers, networking, and GPU drivers, as well as bug fixes and performance improvements across various areas, including memory management, security posture, and hardware platforms. Users are encouraged to experiment with this RC6 build, log any issues they encounter, and provide feedback for continued improvement.
Linus Torvalds has released Linux Kernel 6.19-rc5, marking a regular iteration in the development process before reaching the stable code later on. The fifth release candidate includes various updates to drivers, filesystem tweaks, and tooling bits, with GPU and networking teams driving major improvements. The cumulative effect of these changes is significant, tackling weaknesses and helping Linux handle more before its final release. Overall, this RC seems like a standard iteration that sets the stage for the eventual 6.x stable code release.
The Linux Kernel version 6.18.5 has been released, bringing together contributions from various developers to improve reliability and performance. A key fix addresses an old problem related to network file system (NFS) handling credentials during local I/O tasks, which had reintroduced bugs in earlier code changes. Additionally, the kernel team has made significant improvements to scheduling with a new algorithm that balances system loads more efficiently, even if it means a slight performance hit on certain jobs. The release also includes fixes for Multipath TCP (MPTCP) disconnects and other tweaks aimed at maintaining code quality and streamlining processes.
The latest Linux Kernel release, version 6.18.4, has been rolled out with a focus on stability and reliability. One notable tweak is the reversal of a previous change that caused issues for some laptops, specifically the Dell XPS13, due to label-based lookups. Additionally, the kernel has seen solid work aimed at tackling tricky memory issues and resolving problems with device access techniques in VFIO/PCI drivers. The release also adds support for Intel's RAPL interface on specific processors, enhancing power management and efficiency features.
