This release contains the changes from v0.9.39 to v0.9.39-1.

This is a security release addressing a potentially critical bug in parachain validation.
See the wasmtime advisory GHSA-ff4p-7xrq-q5r8 for more information.

Only validators are required to upgrade.

Upgrade Priority

‼️ HIGH: This is a high priority release for validators and you must upgrade as as soon as possible.

The changes motivating this priority level are:

• [P] ✅ trivial #6852 !! Critical - Update wasmtime to 6.0.1 (0.9.39 branch)

Rust compiler versions

This release was built and tested against the following versions of rustc. Other versions may work.

• Rust Stable: rustc 1.66.1 (90743e729 2023-01-10)
• Rust Nightly: rustc 1.67.0-nightly (a00f8ba7f 2022-11-15)

Runtimes

This is a client-only release, no runtime upgrade is provided.

Changes

Legend

• [P] Polkadot
• [S] Substrate

Client

• [P] ✅ trivial #6852 ‼️ Critical - Update wasmtime to 6.0.1 (0.9.39 branch)

Docker image

The docker image for this release can be found at Docker hub (It will be available a few minutes after the release has been published).

You may pull it using:

docker pull parity/polkadot:latest