net/sched: Only allow act_ct to bind to clsact/ingress qdiscs and shared blocks

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

CVE-2026-23270 · Microsoft / collected KEV context

cve-program · CVE-2026-23270

• https://git.kernel.org/stable/c/bc4e5bb529823a09f02dbe96169de679a9db26e0
• https://git.kernel.org/stable/c/fb3c380a54e33d1fd272cc342faa906d787d7ef1
• https://git.kernel.org/stable/c/5a110ddcc99bda77a28598b3555fe009eaab3828
• https://git.kernel.org/stable/c/524ce8b4ea8f64900b6c52b6a28df74f6bc0801e
• https://git.kernel.org/stable/c/380ad8b7c65ea7aa10ef2258297079ed5ac1f5b6
• https://git.kernel.org/stable/c/9deda0fcda5c1f388c5e279541850b71a2ccfcf4
• https://git.kernel.org/stable/c/11cb63b0d1a0685e0831ae3c77223e002ef18189

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