Vulnerability in Linux Kernel Affecting Task Migration
CVE-2025-21771
What is CVE-2025-21771?
A vulnerability exists in the Linux kernel related to task migration, specifically in the process of differentiating between cgroup and autogroup task migrations. The scx_move_task() function was failing to accurately identify the type of migration, which led to warning messages indicating potential mismanagement of task migration. To rectify this, an argument was added to the sched_move_task() function to clarify whether the task migration is cgroup-related or autogroup-related, ensuring accurate handling of task migrations and renaming the function to scx_cgroup_move_task() for better clarity.
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Affected Version(s)
Linux 8195136669661fdfe54e9a8923c33b31c92fc1da < 75bf2f80c046d2ec5a07455891ea0a9fb6d8b5f6
Linux 8195136669661fdfe54e9a8923c33b31c92fc1da
Linux 8195136669661fdfe54e9a8923c33b31c92fc1da