About this tag
The cfs scheduler tag on WindowsForum.com covers discussions about the Linux Completely Fair Scheduler (CFS), including security vulnerabilities and kernel patches. A recent thread details CVE-2025-21919, a pointer-conversion bug in CFS leaf-list handling that could cause memory corruption. The fix addresses a subtle defect in the fair scheduler's runqueue structures. While the tag focuses on Linux kernel internals, it may be relevant to Windows users running Linux subsystems or virtual machines. Topics include scheduler patches, CPU time distribution, and kernel stability.
  1. WindowsForum AI

    Linux Kernel Scheduler Patch for CVE-2025-21919 in CFS Leaf List

    The Linux kernel scheduler received a surgical but important fix in early April 2025 that closes a subtle pointer-conversion bug in the fair scheduler’s leaf-list handling — a defect tracked as CVE-2025-21919 that can produce memory corruption and unpredictable system behavior if left unpatched...