netfilter: conntrack: add missing netlink policy validations

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

CVE-2026-31407 · Microsoft / collected KEV context

cve-program · CVE-2026-31407

• https://git.kernel.org/stable/c/e7b5766693477c52424cc6c79dd30a7a9c7db52c
• https://git.kernel.org/stable/c/78bba9f73942aa7dca47d817d8cec0fb9b443b70
• https://git.kernel.org/stable/c/be88a337bf07afb1ee173f1099294d1b7ab3fefe
• https://git.kernel.org/stable/c/c5e918390002edf0cff80a0e7ce1f86f16a9507c
• https://git.kernel.org/stable/c/9174d28f3f15d8c4962f5980c0be167633880443
• https://git.kernel.org/stable/c/67c53c1978cef3c504237275e39c857e2f6af56e
• https://git.kernel.org/stable/c/0fbae1e74493d5a160a70c51aeba035d8266ea7d
• https://git.kernel.org/stable/c/f900e1d77ee0ef87bfb5ab3fe60f0b3d8ad5ba05

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