sctp: fix use-after-free of cached ASCONF chunk

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

CVE-2026-74587 · Microsoft / collected KEV context

cve-program · CVE-2026-74587

• https://git.kernel.org/stable/c/10459b03e2d9ee12435e96f587de4d4cacdbf435
• https://git.kernel.org/stable/c/e1bb114e09372fd6e03387ced9ef566da336ed6c
• https://git.kernel.org/stable/c/179676f0166230c80053a392303485b37c93dd33
• https://git.kernel.org/stable/c/dc67d528c2fa939cec7fe3bf7f3089c8d281ca3d
• https://git.kernel.org/stable/c/618b5c6d049896fcfabb91afc072954c92cb2693
• https://git.kernel.org/stable/c/07daf4f9750104960a1d60831b2353c0d41f35fb
• https://git.kernel.org/stable/c/d949992bc3f00027a2c755e860a11950c75f6073
• https://git.kernel.org/stable/c/8c283e7b56adce00193837f3311b06662466fb21

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