What were the notable Linux updates?

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm, Merge tag 'x86-urgent-2026-05-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip, and Merge tag 'irq-urgent-2026-05-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.

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The Wire · Showcase

KERNEL EMERGENCY FIXES ACROSS KVM, X86, AND REAL-TIME SUBSYSTEMS

By RepoJournal · Filed 06:01 UTC on May 25, 2026 · About Linux

Linus pulled five critical fix sets overnight addressing memory leaks, SEV guest failures, and real-time kernel regressions that block stable deployments.

The KVM team shipped fixes for arm64 ITS EventID sanitization and a PPI memory leak that crashes vcpu initialization [1], while RISC-V steal-time recording got a HVA validation patch. On the x86 side, a major change landed: SEV guests now handle encrypted memory failures conservatively to prevent silent data corruption [2], and Peter Zijlstra fixed a critical VMX hrtimer regression that broke RT scheduling. The irqchip fixes address two driver-specific issues: renesas-rzt2h's broken probe error path and exynos-combiner's spinlock contention on -rt kernels [3]. Real-time kernel users got relief from a debugobjects regression that was poisoning priority inheritance by incorrectly filling the pool under contention [4]. Separately, hwmon picked up adm1266 stability fixes and lenovo-ec-sensors got a devm cleanup fix that was leaking region references [5].

Action items

→ Pull the x86-urgent-2026-05-24 merge immediately if running SEV-enabled guests torvalds/linux [immediate]
→ Rebase if you're carrying any real-time patches - the debugobjects and exynos-combiner fixes are blocking -rt stability torvalds/linux [immediate]
→ Apply KVM fixes before next vcpu initialization testing torvalds/linux [plan]

References

[1] Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm torvalds/linux
[2] Merge tag 'x86-urgent-2026-05-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip torvalds/linux
[3] Merge tag 'irq-urgent-2026-05-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip torvalds/linux
[4] Merge tag 'core-urgent-2026-05-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip torvalds/linux
[5] Merge tag 'hwmon-for-v7.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging torvalds/linux

Quick answers

What shipped in Linux on May 25, 2026?: Linus pulled five critical fix sets overnight addressing memory leaks, SEV guest failures, and real-time kernel regressions that block stable deployments. In total, 8 commits and 1 releases landed.
What were the notable Linux updates?: Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm, Merge tag 'x86-urgent-2026-05-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip, and Merge tag 'irq-urgent-2026-05-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.

IO_URING FIXES AND SOCKMAP USE-AFTER-FREE PATCH LAND IN 7.2-RC

Linus merged critical io_uring corrections and a high-impact sockmap race condition fix that closes a threading vulnerability in TCP BPF message handling.

infra 83 shipped 1-min read

Linux 1 day ago

KERNEL PATCHES CLOSE NAMESPACE PRIVILEGE ESCALATION GAPS IN TUNNEL DRIVERS

Two critical fixes close a privilege escalation hole in VXLAN and GENEVE tunnel changelink operations that allowed unprivileged callers in one namespace to rewrite devices whose underlay lives elsewhere.

infra 100 shipped 1-min read

Linux 2 days ago

WATCHDOG UAF AND DIVISION-BY-ZERO FIXES LAND IN V7.2-RC5

Linus merged critical watchdog subsystem patches addressing a use-after-free vulnerability and a zero-division crash that could tank embedded systems in production.

infra 40 shipped 1-min read

Linux 3 days ago

KERNEL RC5 LANDS WITH HWMON FIXES AND KVM STABILITY PATCHES

Linux 7.2-rc5 rolls out critical hardware monitoring fixes and RISC-V virtualization patches that tighten KVM stability across multiple architectures.

infra 47 shipped 2-min read

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