net/af_iucv: fix NULL deref in afiucv_hs_callback_syn()

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

CVE-2026-68141 · Microsoft / collected KEV context

cve-program · CVE-2026-68141

• https://git.kernel.org/stable/c/6a1eb5b46c19073f8153b7e2c19b408cf353aaf1
• https://git.kernel.org/stable/c/c0b6e2ae90613c2fea7eaf3faa20985c6c2a1953
• https://git.kernel.org/stable/c/07e21deb3664001995e0a456dd627ab7dbe127ec
• https://git.kernel.org/stable/c/8bb111f87ded6acb9837ec9b45d6f02cda94c51f
• https://git.kernel.org/stable/c/46453b16f38ec7147351f7447e2aec6ea330f7b3
• https://git.kernel.org/stable/c/33736ff5e7c97d3348ce812e8bd2e125d840743c
• https://git.kernel.org/stable/c/0e857185591fe79934427c9c0c1c31dc776be134
• https://git.kernel.org/stable/c/47a5116e56a6b6fe1e909f244e39cd0fc26ceee4

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