Go-ipfs v0.12.2 and v0.11.1 have been released.
These patch releases fix a security issue wherein traversing some malformed DAGs can cause the node to panic.
Downloads: IPFS Distributions
Release notes v0.12.2: Release v0.12.2 · ipfs/go-ipfs · GitHub
Release notes v0.11.1: Release v0.11.1 · ipfs/go-ipfs · GitHub