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Security Advisories: GSA_kwCzR0hTQS00cTgzLTdjcTQtcDZ3Z84AAxat

`tokio::io::ReadHalf<T>::unsplit` is Unsound

tokio::io::ReadHalf<T>::unsplit can violate the Pin contract

The soundness issue is described in the tokio/issues#5372

Specific set of conditions needed to trigger an issue (a !Unpin type in ReadHalf)
is unusual, combined with the difficulty of making any arbitrary use-after-free
exploitable in Rust without doing a lot of careful alignment of data types in
the surrounding code.

The tokio feature io-util is also required to be enabled to trigger this
soundness issue.

Thanks to zachs18 reporting the issue to Tokio team responsibly and taiki-e
and carllerche appropriately responding and fixing the soundness bug.

Tokio before 0.2.0 used futures 0.1 that did not have Pin, so it is not
affected by this issue.

Permalink: https://github.com/advisories/GHSA-4q83-7cq4-p6wg
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS00cTgzLTdjcTQtcDZ3Z84AAxat
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Low
Classification: General
Published: almost 2 years ago
Updated: almost 2 years ago


Identifiers: GHSA-4q83-7cq4-p6wg
References: Repository: https://github.com/tokio-rs/tokio
Blast Radius: 0.0

Affected Packages

cargo:tokio
Dependent packages: 20,254
Dependent repositories: 53,472
Downloads: 242,516,462 total
Affected Version Ranges: >= 0.2.0, < 1.18.5, >= 1.19.0, < 1.20.4, >= 1.21.0, < 1.24.2
Fixed in: 1.18.5, 1.20.4, 1.24.2
All affected versions: 0.2.0, 0.2.1, 0.2.2, 0.2.3, 0.2.4, 0.2.5, 0.2.6, 0.2.7, 0.2.8, 0.2.9, 0.2.10, 0.2.11, 0.2.12, 0.2.13, 0.2.14, 0.2.15, 0.2.16, 0.2.17, 0.2.18, 0.2.19, 0.2.20, 0.2.21, 0.2.22, 0.2.23, 0.2.24, 0.2.25, 0.3.0, 0.3.1, 0.3.2, 0.3.3, 0.3.4, 0.3.5, 0.3.6, 0.3.7, 1.0.0, 1.0.1, 1.0.2, 1.0.3, 1.1.0, 1.1.1, 1.2.0, 1.3.0, 1.4.0, 1.5.0, 1.5.1, 1.6.0, 1.6.1, 1.6.2, 1.6.3, 1.6.4, 1.7.0, 1.7.1, 1.7.2, 1.7.3, 1.8.0, 1.8.1, 1.8.2, 1.8.3, 1.8.4, 1.8.5, 1.9.0, 1.10.0, 1.10.1, 1.11.0, 1.12.0, 1.13.0, 1.13.1, 1.14.0, 1.14.1, 1.15.0, 1.16.0, 1.16.1, 1.17.0, 1.18.0, 1.18.1, 1.18.2, 1.18.3, 1.18.4, 1.19.0, 1.19.1, 1.19.2, 1.20.0, 1.20.1, 1.20.2, 1.20.3, 1.21.0, 1.21.1, 1.21.2, 1.22.0, 1.23.0, 1.23.1, 1.24.0, 1.24.1
All unaffected versions: 0.0.0, 0.1.0, 0.1.1, 0.1.2, 0.1.3, 0.1.4, 0.1.5, 0.1.6, 0.1.7, 0.1.8, 0.1.9, 0.1.10, 0.1.11, 0.1.12, 0.1.13, 0.1.14, 0.1.15, 0.1.16, 0.1.17, 0.1.18, 0.1.19, 0.1.20, 0.1.21, 0.1.22, 1.18.5, 1.18.6, 1.20.4, 1.20.5, 1.20.6, 1.24.2, 1.25.0, 1.25.1, 1.25.2, 1.25.3, 1.26.0, 1.27.0, 1.28.0, 1.28.1, 1.28.2, 1.29.0, 1.29.1, 1.30.0, 1.31.0, 1.32.0, 1.32.1, 1.33.0, 1.34.0, 1.35.0, 1.35.1, 1.36.0, 1.37.0, 1.38.0, 1.38.1, 1.39.0, 1.39.1, 1.39.2, 1.39.3, 1.40.0, 1.41.0, 1.41.1