sctp: sysctl: cookie_hmac_alg: avoid using current->nsproxy

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

CVE-2025-21640 · Microsoft / collected KEV context

cve-program · CVE-2025-21640

• https://git.kernel.org/stable/c/5599b212d2f4466e1832a94e9932684aaa364587
• https://git.kernel.org/stable/c/03ca51faba2b017bf6c90e139434c4117d0afcdc
• https://git.kernel.org/stable/c/86ddf8118123cb58a0fb8724cad6979c4069065b
• https://git.kernel.org/stable/c/3cd0659deb9c03535fd61839e91d4d4d3e51ac71
• https://git.kernel.org/stable/c/ad673e514b2793b8d5902f6ba6ab7e890dea23d5
• https://git.kernel.org/stable/c/f0bb3935470684306e4e04793a20ac4c4b08de0b
• https://git.kernel.org/stable/c/ea62dd1383913b5999f3d16ae99d411f41b528d4

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