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Implementation bug in the go client leads to steady increase of difficulty independent of hashing power.<\/strong><\/p>\n Affected configurations: <\/b>All<\/span> Go client versions v1.0.x, v1.1.x, release and develop branches. The bug was introduced in a recent update and release through commit <\/span><\/a>https:\/\/github.com\/ethereum\/go-ethereum\/commit\/7324176f702a77fc331bf16a968d2eb4bccce021<\/a> which went into the affected client versions. All miners running earlier mentioned versions are affected and are advised to update as soon as possible. <\/span><\/p>\n Likelihood: <\/b>High<\/span><\/p>\n Severity: <\/b>Medium<\/span><\/p>\n Impact: <\/b>Increase in block time will lead to an exponential increase in difficulty <\/span><\/p>\n Details:<\/b> A bug in the go client leads to steady increase in difficulty in the following block, as timestamp in new block = timestamp + 1 of old block, regardless of the actual time, when mining. This leads to an increase in the difficulty independently of the hashing power<\/span><\/p>\n Effects on expected chain reorganisation depth: <\/b>None<\/span><\/p>\n Proposed temporary workaround:<\/b> None<\/span><\/p>\n Remedial action taken by Ethereum<\/b>: Provision of hotfixes as below:<\/span><\/p>\n If using the PPA: <\/span>sudo apt-get update<\/span><\/span> then <\/span>sudo apt-get upgrade<\/span><\/span><\/p>\n If using brew: <\/span>brew update<\/span><\/span> then <\/span>brew reinstall ethereum<\/span><\/span><\/p>\n If using a windows binary: download the updated binary from the <\/span>release page<\/span><\/a><\/p>\n