CVE-2022-28738

CRITICAL

Ruby <3.0.4, <3.1.2 - Memory Corruption

Title source: llm

Description

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.

References (5)

[Permissions Required, Third Party Advisory] https://hackerone.com/reports/1220911

[Patch, Third Party Advisory] https://security-tracker.debian.org/tracker/CVE-2022-28738

[Third Party Advisory] https://security.gentoo.org/glsa/202401-27

[Third Party Advisory] https://security.netapp.com/advisory/ntap-20220624-0002/

[Vendor Advisory] https://www.ruby-lang.org/en/news/2022/04/12/double-free-in-regexp-compilation-cve-2022-28738/

Scores

CVSS v3 9.8

EPSS 0.0037

EPSS Percentile 58.6%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Classification

CWE

CWE-415

Status published

Affected Products (1)

ruby-lang/ruby < 3.0.4

Timeline

Published May 09, 2022

Tracked Since Feb 18, 2026