Provide references for CVE-2021-29136.
Where can I find more information about CVE-2021-29136?
References are available at: http://www.openwall.com/lists/oss-security/2021/04/06/2, https://github.com/opencontainers/umoci/security/advisories/GHSA-9m95-8hx6-7p9v, https://github.com/opencontainers/umoci/commit/d9efc31daf2206f7d3fdb839863cf7a576a2eb57.