Access of Resource Using Incompatible Type ('Type Confusion') Affecting rust package, versions <0:1.94.0-1.amzn2023.0.2


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.01% (2nd percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Access of Resource Using Incompatible Type ('Type Confusion') vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-AMZN2023-RUST-16068206
  • published15 Apr 2026
  • disclosed20 Mar 2026

Introduced: 20 Mar 2026

NewCVE-2026-33055  (opens in a new tab)
CWE-843  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 rust to version 0:1.94.0-1.amzn2023.0.2 or higher.
This issue was patched in ALAS2023-2026-1568.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rust package and not the rust package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

tar-rs is a tar archive reading/writing library for Rust. Versions 0.4.44 and below have conditional logic that skips the PAX size header in cases where the base header size is nonzero. As part of CVE-2025-62518, the astral-tokio-tar project was changed to correctly honor PAX size headers in the case where it was different from the base header. This is almost the inverse of the astral-tokio-tar issue. Any discrepancy in how tar parsers honor file size can be used to create archives that appear differently when unpacked by different archivers. In this case, the tar-rs (Rust tar) crate is an outlier in checking for the header size - other tar parsers (including e.g. Go archive/tar) unconditionally use the PAX size override. This can affect anything that uses the tar crate to parse archives and expects to have a consistent view with other parsers. This issue has been fixed in version 0.4.45.

CVSS Base Scores

version 3.1