drop_monitor: fix size calculations for 64-bit attributes

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

CVE-2026-68287 · Microsoft / collected KEV context

cve-program · CVE-2026-68287

• https://git.kernel.org/stable/c/1275a4769c126405c6c63b6372daff120ac679a6
• https://git.kernel.org/stable/c/0da8f531336b28a59b23e5a67d40eaed15906201
• https://git.kernel.org/stable/c/6048ed2dfb33426c8aef32f8d225ea91c66813db
• https://git.kernel.org/stable/c/925669d4cfd47a9019ab29b40676215bab5dae35
• https://git.kernel.org/stable/c/4a9e30764e80693bcf875c776170edce20f94fe0
• https://git.kernel.org/stable/c/7089f7ab99c89f443c92d8fcc585e63f2727f0b3

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