netfilter: ipset: fix refcount race between list:set GC and swap

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

CVE-2026-74748 · Microsoft / collected KEV context

cve-program · CVE-2026-74748

• https://git.kernel.org/stable/c/97a01de0c6321b7210d30d0a4d60f10f561097c7
• https://git.kernel.org/stable/c/c21afc7c216a4d257a4f3f300e0791890bc846b9
• https://git.kernel.org/stable/c/b0aab9dd1a348b99d75ff52765719d0cc2050630
• https://git.kernel.org/stable/c/b891e7a6bb06e0f6560e5932665ac660acd12225
• https://git.kernel.org/stable/c/20cb13a523f0a05cb2d0a7d72abae687683712e0
• https://git.kernel.org/stable/c/cb20da33839f28f590c99f16bafaa6151451c0e8
• https://git.kernel.org/stable/c/24ffcb1e1688c55fd2a505f064295cd28eac546d
• https://git.kernel.org/stable/c/0c88868271653537ed443272dd8e7d13634d214b

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