sched/fair: Fix potential memory corruption in child_cfs_rq_on_list

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2025-21919 · Microsoft / collected KEV context

cve-program · CVE-2025-21919

• https://git.kernel.org/stable/c/5cb300dcdd27e6a351ac02541e0231261c775852
• https://git.kernel.org/stable/c/000c9ee43928f2ce68a156dd40bab7616256f4dd
• https://git.kernel.org/stable/c/9cc7f0018609f75a349e42e3aebc3b0e905ba775
• https://git.kernel.org/stable/c/b5741e4b9ef3567613b2351384f91d3f16e59986
• https://git.kernel.org/stable/c/e1dd09df30ba86716cb2ffab97dc35195c01eb8f
• https://git.kernel.org/stable/c/3b4035ddbfc8e4521f85569998a7569668cccf51

No related operational record is retained in the current change model.