CVE-2026-68320 sctp: fix auth_chunk_list capacity check in sctp_auth_ep_add_chunkid

In the Linux kernel, the following vulnerability has been resolved: sctp: fix authchunklist capacity check in sctpauthepaddchunkid sctpauthepaddchunkid uses SCTPNUMCHUNKTYPES 20 as the capacity limit for ep-authchunklist, allowing it to hold up to 20 chunk entries paramhdr.length up to 24. Howeve...