As the Steam Deck slowly marches toward its fifth birthday next February, owners are likely eager for a way to extend its life rather than investing in expensive high-end competition. A new patch for AMD's Linux drivers could substantially reduce low-end frame hitches when the Steam Deck or other AMD-based gaming hardware is running in Energy Performance Preference (EPP) mode.

Writing on the Linux kernel mailing list (thanks, Phoronix), kernel coder David Vernet lays out the basic problem that games often face in EPP mode. When a busy thread frequently goes to sleep for short periods, the current AMD driver can misinterpret that behavior as a signal to lower its average performance target. When those threads wake up, they start at a lower-than-desired frequency, leading to increased frame latency, stale frames, and longer frame generation times at the low end of the distribution.

Shifting the processor to "performance" mode fixes this problem but eliminates the energy savings that EPP mode is supposed to provide. And simply boosting the affected thread's minimum performance target permanently actually makes low-end performance worse, thanks to the complexities of CPU/GPU boost management.

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The widespread introduction of AI-powered coding tools has led to some dramatic splits between those integrating those tools into their workflows and anti-AI absolutists who don't want large language model-generated code anywhere near their projects. When it comes to the Linux kernel, though, creator and top-level maintainer Linus Torvalds said he is "willing to absolutely put my foot down" in support of using AI tools to improve the long-standing open source project.

Writing in a lengthy post on the Linux kernel mailing list this week, Torvalds said that "Linux is not one of those anti-AI projects, and if somebody has issues with that, they can do the open-source thing and fork it. Or just walk away."

The statement came amid a lengthy thread arguing about the use of Sashiko, an "agentic Linux kernel code review system" that its creators claim can, in tests, independently find 53.6 percent of the bugs that would end up being fixed by human coders in later commits. But the tool can also waste maintainers' time by sending "false positive" reports of bugs that don't exist, at a rate Sashiko's maintainers estimate is "well within [the] 20% range."

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A Linux vulnerability that allows untrusted virtual machines to gain root access to host machines is one of two high-severity flaws to surface this week in the open source operating system.

The vulnerability resides in KVM, which is, in essence, a virtual machine app included in the kernel of many Linux distributions. The vulnerability, tracked as CVE-2026-53359, allows guest virtual machines—such as those used in cloud platforms to isolate one user’s instance from the host OS and other user instances—to break out of that container.

Januscape: A threat to cloud platforms

The vulnerability affects KVM running on both AMD and Intel processors. It exploits bugs residing in the KVM guest-side, the portion of the VM that consists of only resources like the OS or drivers present in the guest VM, rather than resources present on the host machine. The threat went unnoticed in the Linux kernel for 16 years.

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