bpf, sockmap: reject overflowing copy + len in bpf_msg_push_data()

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

CVE-2026-64548 · Microsoft / collected KEV context

cve-program · CVE-2026-64548

• https://git.kernel.org/stable/c/f1644c9508d24f50dd9e8ebe8d3ba86e0996d2f5
• https://git.kernel.org/stable/c/a12b1575f9feabd91695a9e9d004862f7195fa25
• https://git.kernel.org/stable/c/ff39d0e3b4feeb65ca43c453d7c75fdf872ded0d
• https://git.kernel.org/stable/c/888706a76286c547bd035432602571e8024b5305
• https://git.kernel.org/stable/c/db77b6bb6e6edb79b10b4efcce346eec5582d588
• https://git.kernel.org/stable/c/4e40056bb5c829f0423f0a6694a0477726d2147e
• https://git.kernel.org/stable/c/bd004716ba75fed6d185795c85cdc92540ebeaab
• https://git.kernel.org/stable/c/0c0a8ed85349dae298712d79cb276acfeb794d82

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