net/smc: check v2_ext_offset/eid_cnt/ism_gid_cnt when receiving proposal msg

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

CVE-2024-49568 · Microsoft / collected KEV context

cve-program · CVE-2024-49568

• https://git.kernel.org/stable/c/9cc0170ae646876aa5de2f0cad3066ce53e86f27
• https://git.kernel.org/stable/c/49798283fce4c1a24fb1ba4c7c39127739535571
• https://git.kernel.org/stable/c/690b9a8db9460d065785548e43fd6a02d247c1b7
• https://git.kernel.org/stable/c/295a92e3df32e72aff0f4bc25c310e349d07ffbf
• https://git.kernel.org/stable/c/42f6beb2d5779429417b5f8115a4e3fa695d2a6c
• https://git.kernel.org/stable/c/7863c9f3d24ba49dbead7e03dfbe40deb5888fdf

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