ipv6: mcast: extend RCU protection in igmp6_send()

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

CVE-2025-21759 · Microsoft / collected KEV context

cve-program · CVE-2025-21759

• https://git.kernel.org/stable/c/638e8fe3563a82f298fe537a28d5342a97278cf1
• https://git.kernel.org/stable/c/6901bbb169e3add6c037218d996790cef6b3d650
• https://git.kernel.org/stable/c/7e0a818ecc4d62e7fb668ea02de0bfe8ba0b7dff
• https://git.kernel.org/stable/c/81b25a07ebf53f9ef4ca8f3d96a8ddb94561dd5a
• https://git.kernel.org/stable/c/0bf8e2f3768629d437a32cb824149e6e98254381
• https://git.kernel.org/stable/c/8e92d6a413feaf968a33f0b439ecf27404407458
• https://git.kernel.org/stable/c/087c1faa594fa07a66933d750c0b2610aa1a2946

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