CVE-2022-2584: ipld/go-codec-dagpb panics when processing certain blocks

April 8, 2022 (updated January 23, 2026)

Decoding certain blocks using the go-ipld-prime version of the dag-pb codec (go-codec-dagpb) can cause a panic. The panic comes from an assumption that the reported link length is accurate, but if the block ends before that reported length then it’s a buffer overread.

References

github.com/advisories/GHSA-g3vv-g2j5-45f2
github.com/ipld/go-codec-dagpb/commit/a17ace35cc760a2698645c09868f9050fa219f57
github.com/ipld/go-codec-dagpb/security/advisories/GHSA-g3vv-g2j5-45f2
nvd.nist.gov/vuln/detail/CVE-2022-2584
pkg.go.dev/vuln/GO-2022-0422

Code Behaviors & Features

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