net/rose: prevent integer overflows in rose_setsockopt()

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

CVE-2025-21711 · Microsoft / collected KEV context

cve-program · CVE-2025-21711

• https://git.kernel.org/stable/c/4bdd449977e2364a53d0b2a5427e71beb1cd702d
• https://git.kernel.org/stable/c/b8583b54455cbec2fc038fa32b6700890b369815
• https://git.kernel.org/stable/c/9bdee49ad6bbd26ab5e13cc6731e54fb1b6c1dca
• https://git.kernel.org/stable/c/352daa50946c3bbb662432e8daf54d6760796589
• https://git.kernel.org/stable/c/d08f4074f9c69f7e95502587eb1b258a965ba7f0
• https://git.kernel.org/stable/c/e5338930a29d0ab2a5af402f5f664aeba0d1a676
• https://git.kernel.org/stable/c/d640627663bfe7d8963c7615316d7d4ef60f3b0b

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