fix(udm): validate SDM subscription IDs - #95
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What this changes
$neThe free5GC UDR currently generates UE SDM subscription IDs as positive decimal integers, while shared-data subscription IDs are treated as opaque values returned by the upstream service. Validating each path according to its source keeps crafted values from reaching downstream processing and avoids exposing internal errors.
Related issue: free5gc/free5gc#1133 (GHSA-f72w-jgfw-hhm9)
Validation
go test ./...go vet ./...git diff --check