ipv4: check for NULL idev in ip_route_use_hint()

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

CVE-2024-36008 · Microsoft / collected KEV context

cve-program · CVE-2024-36008

• https://git.kernel.org/stable/c/7da0f91681c4902bc5c210356fdd963b04d5d1d4
• https://git.kernel.org/stable/c/03b5a9b2b526862b21bcc31976e393a6e63785d1
• https://git.kernel.org/stable/c/7a25bfd12733a8f38f8ca47c581f876c3d481ac0
• https://git.kernel.org/stable/c/8240c7308c941db4d9a0a91b54eca843c616a655
• https://git.kernel.org/stable/c/c71ea3534ec0936fc57e6fb271c7cc6a2f68c295
• https://git.kernel.org/stable/c/58a4c9b1e5a3e53c9148e80b90e1e43897ce77d1

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