In etcd before versions 3.3.23 and 3.4.10, it is possible to have an entry index greater then the number of entries in the ReadAll method in wal/wal.go. This could cause issues when WAL entries are being read during consensus as an arbitrary etcd consensus participant could go down from a runtime panic when reading the entry.
{ "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro", "ubuntu_priority": "medium", "binaries": [ { "etcd-server-dbgsym": "3.2.17+dfsg-1ubuntu0.1+esm1", "golang-etcd-server-dev": "3.2.17+dfsg-1ubuntu0.1+esm1", "etcd": "3.2.17+dfsg-1ubuntu0.1+esm1", "etcd-client-dbgsym": "3.2.17+dfsg-1ubuntu0.1+esm1", "etcd-server": "3.2.17+dfsg-1ubuntu0.1+esm1", "etcd-client": "3.2.17+dfsg-1ubuntu0.1+esm1" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "etcd-server-dbgsym": "3.2.26+dfsg-6ubuntu0.1", "golang-etcd-server-dev": "3.2.26+dfsg-6ubuntu0.1", "etcd": "3.2.26+dfsg-6ubuntu0.1", "etcd-client-dbgsym": "3.2.26+dfsg-6ubuntu0.1", "etcd-server": "3.2.26+dfsg-6ubuntu0.1", "etcd-client": "3.2.26+dfsg-6ubuntu0.1" } ] }