Double Free Affecting rubygems package, versions <0:3.2.33-160.el9_0


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
2.97% (87th percentile)

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  • Snyk IDSNYK-RHEL9-RUBYGEMS-11446193
  • published5 Aug 2025
  • disclosed14 Apr 2022

Introduced: 14 Apr 2022

CVE-2022-28738  (opens in a new tab)
CWE-415  (opens in a new tab)

How to fix?

Upgrade RHEL:9 rubygems to version 0:3.2.33-160.el9_0 or higher.
This issue was patched in RHSA-2022:6585.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rubygems package and not the rubygems package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

A double free was found in the Regexp compiler in Ruby 3.x before 3.0.4 and 3.1.x before 3.1.2. If a victim attempts to create a Regexp from untrusted user input, an attacker may be able to write to unexpected memory locations.

CVSS Base Scores

version 3.1