ipld/go-codec-dagpb panics when processing certain blocks

CVE-2022-2584 → View on GitHub ↗ View on CVE.org ↗ View on NVD ↗

Description

Impact

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.

Patches

The issue is fixed in v1.3.1 and above.

Consumers can discover the versions of go-codec-dagpb in a module's dependency graph using the following command in the module root:

go mod graph | grep go-codec-dagpb

Workarounds

You can work around this issue without upgrading by recovering panics higher in the call stack of the goroutine that calls the defective code.

For more information

If you have any questions or comments about this advisory:

Basic information

Type
reviewed
Severity
high
Advisory on GitHub
Open advisory ↗
Repository advisory
Open repository advisory ↗
Source code
Browse source ↗
Published (advisory)
2022-04-08 22:08:45 UTC
Updated
2026-01-23 22:34:06 UTC
GitHub reviewed
2022-04-08 22:08:45 UTC

EPSS Score

Score Percentile
0.47% 64.51%

CVSS Scores

Base score Version Severity Vector
7.5 3.1 —
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.

Identifiers

Type Value
GHSA GHSA-g3vv-g2j5-45f2 ↗
CVE CVE-2022-2584 ↗

CWEs

CWE id Name
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

Affected packages (1)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
go github.com/ipld/go-codec-dagpb < 1.3.1 1.3.1 —

References

cvelogic Threat Intelligence