Code reviews of the Appendix crate // Lib.rs

RUSTSEC-2020-0149 on 2020-11-15: Data race and memory safety issue in Index

The appendix crate implements a key-value mapping data structure called Index<K, V> that is stored on disk. The crate allows for any type to inhabit the generic K and V type parameters and implements Send and Sync for them unconditionally.

Using a type that is not marked as Send or Sync with Index can allow it to be used across multiple threads leading to data races. Additionally using reference types for the keys or values will lead to the segmentation faults in the crate's code.

CVE-2020-36469

GHSA-fvhr-7j8m-3cvc

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Crates in the crates.io registry are tarball snapshots uploaded by crates' publishers. The registry is not using crates' git repositories, so there is a possibility that published crates have a misleading repository URL, or contain different code from the code in the repository.

To review the actual code of the crate, it's best to use cargo crev open appendix. Alternatively, you can download the tarball of appendix v0.2.2 or view the source online.