scheduler security

About this tag
The tag scheduler security on WindowsForum.com covers discussions about security vulnerabilities and concurrency bugs in operating system schedulers. Recent content includes a thread about a Linux kernel CVE-2026-23225, which details a concurrency bug in the scheduler's CID handling that could lead to out-of-bounds access. The fix addresses a logic error during per-CPU to per-task CID mode transitions. While the specific example is from Linux, the tag may encompass broader scheduler security topics relevant to Windows and other systems, focusing on stability and security hazards that require timely updates.

  1. Linux Kernel CVE-2026-23225: CID Concurrency Bug Fix in Scheduler

    The Linux kernel’s scheduler subsystem received a targeted fix this month for a subtle-but-real concurrency bug tracked as CVE‑2026‑23225: a logic error in sched/mmcid where code assumed a Concurrency ID (CID) was “CPU‑owned” during a mode transition, producing an out‑of‑bounds access (reported...
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    • cid concurrency linux kernel scheduler security security patch
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    • Forum: Security Alerts