Reliance on Undefined Affecting rust-debugger-common package, versions <0:1.97.0-2.amzn2023


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.16% (6th 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 IDSNYK-AMZN2023-RUSTDEBUGGERCOMMON-18911875
  • published18 Aug 2026
  • disclosed17 Jul 2026

Introduced: 17 Jul 2026

CVE-2026-50185  (opens in a new tab)
CWE-758  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 rust-debugger-common to version 0:1.97.0-2.amzn2023 or higher.
This issue was patched in ALAS2023-2026-2065.

NVD Description

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

RustCrypto CMOV provides conditional move CPU intrinsics which are guaranteed on major platforms to execute in constant-time and not be rewritten as branches by the compiler. From 0.1.1 until 0.5.4, the aarch64 implementations of Cmov and CmovEq in cmov/src/backends/aarch64.rs assume high bits are zero-extended when loading values smaller than a register, so set high bits such as [8..] in a Cmov selector or [16..] of self or other in the u16 and i16 CmovEq implementations can cause left.cmovz(&right, condition) to produce incorrect output. This issue is fixed in version 0.5.4.

CVSS Base Scores

version 3.1