docker-credential-helpers before 0.6.3 has a double free in the List functions.

References

• advisory https://github.com/docker/docker-credential-helpers/releases/tag/v0.6.3
• advisory https://usn.ubuntu.com/4103-1/
• advisory https://usn.ubuntu.com/4103-2/
• patch https://github.com/docker/docker-credential-helpers/commit/1c9f7ede70a5ab9851f4c9cb37d317fd89cd318a
• web https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6VVFB6UWUK2GQQN7DVUU6GRRAL637A73/