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java-topology/defects/containerd/patch/CLEAN.md
russell@unturf.com 3bfe10d197 go-cluster: traefik-0001/nats-server-0001 CWE-407; grafana/consul/containerd/buildkit/helm/cayley CLEAN 
traefik-0001: CheckRecursion slices.Contains on growing stack O(D²) → O(D) with parallel map
nats-server-0001: checkConsumerCfg subject filter overlap double-loop O(S²) → O(S²/2)
grafana: CLEAN (gonum topo sort, map visited sets throughout)
consul: CLEAN (discoverychain map[string]struct{} visited)
containerd: CLEAN (walkBlobVariantsOnly map[digest]struct{})
buildkit: CLEAN (addItemToStorage map[*item] visited)
helm: CLEAN (resolver single-pass, dep list O(D) display-only)
cayley: CLEAN (Recursive.Next map[interface{}]seenAt)
2026-03-29 19:47:27 -04:00

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containerd — CWE-407 Scan Result: CLEAN

Scanned: 2026-03-29

Scope

  • cache/refs.go — walkUniqueAncestors/walkBlobVariantsOnly: uses map[digest.Digest]struct{} visited set for layer graph traversal. Correct O(V+E).
  • cache/remotecache/v1/ — addItemToStorage, getRemoteChain: both use map[*item]*itemWithOutgoingLinks / map[int]struct{} visited guards. Correct.
  • All slices.Contains call sites: used on small bounded option/capability slices (mount options, platform lists), never inside a per-item outer loop.

Verdict

No CWE-407 defects found. containerd's layer deduplication and cache traversal use proper hash-map visited guards.