Linux Kernel is a topic tracked in our intelligence system with 5 linked articles.
Google paid $250k for reporting a Linux KVM guest-VM escape (CVE-2026-53359) with a proof-of-concept, while a second vulnerability GhostLock earned $92k; both have patches in the Linux kernel and pose cloud-virtualization isolation risks.
A high-severity Linux vulnerability caused by a single errant character could allow a use-after-free exploit to evade sandbox defenses.
Restartable sequences (rseq) on Linux promise dramatic lock-free, multi-core performance gains, but are Linux-only today and rely on hand-written assembly or advanced tooling; benchmarks claim 3x-43x speedups in malloc-like workloads across various CPUs, with significant portability and ecosystem implications ahead.
A survey of bytecode VMs found in unlikely places (eBPF in Linux, DWARF/GDB expressions, WinRAR’s RarVM, GPU shader interpreters), with concrete numeric specs illustrating their scope and evolution.
Linux kernel swap subsystem is undergoing significant refactoring (swap table, folio-based design, and a new modular swap_ops backend) with quantified overhead reductions per page and a push toward flash-friendly swapping, plus a vision for a virtual swap layer to enable swap backends.
Linux kernel patch introduces a killswitch: per-function short-circuit mitigation via kprobes with a /sys/kernel/security/killswitch interface, boot-time and runtime engagement, taint tracking, and self-tests—including a CVE-2026-31431 proof-of-concept for AF_ALG AEAD.
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