synced 4 MIN AGO
01 Record

CVE-2022-28738

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

UnratedPUBLISHEDCNA: mitre
CNA base scoreUnratedNo CNA CVSS vector
View raw JSON

02 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

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
3.13% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 87.8% of scored records. A rank, not a probability.
NVD base score
9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2022-05-09 00:00Z4 YR AGO
Last updated
2024-08-03 06:03Z2 YR AGO
Reserved
2022-04-06
Assigning CNA
mitre
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
Data version
5.1
Document digest
04c74d642ff716abe59a46a6e7b7814d433cf1c1e753609550cc786d7f137e5e

05 Affected products

VendorProductVersionsPlatforms
redhatenterprise_linuxNot specified—
redhatrhel_software_collectionsNot specified—
ruby-langrubyNot specified—

06 References

07 Fixed in

AlmaLinux 8

  • ruby
    Fixed in 3.0.4-141.module_el8.6.0+3263+41cde0c0
  • ruby-default-gems
    Fixed in 3.0.4-141.module_el8.6.0+3263+41cde0c0
  • ruby-devel
    Fixed in 3.0.4-141.module_el8.6.0+3263+41cde0c0
  • ruby-doc
    Fixed in 3.0.4-141.module_el8.6.0+3263+41cde0c0
  • ruby-libs
    Fixed in 3.0.4-141.module_el8.6.0+3263+41cde0c0
  • rubygem-abrt
    Fixed in 0.4.0-1.module_el8.5.0+2595+0c654ebc
  • rubygem-abrt-doc
    Fixed in 0.4.0-1.module_el8.5.0+2595+0c654ebc
  • rubygem-bigdecimal
    Fixed in 3.0.0-141.module_el8.6.0+3263+41cde0c0
  • rubygem-bundler
    Fixed in 2.2.33-141.module_el8.6.0+3263+41cde0c0
  • rubygem-io-console
    Fixed in 0.5.7-141.module_el8.6.0+3263+41cde0c0
  • rubygem-irb
    Fixed in 1.3.5-141.module_el8.6.0+3263+41cde0c0
  • rubygem-json
    Fixed in 2.5.1-141.module_el8.6.0+3263+41cde0c0
  • rubygem-minitest
    Fixed in 5.14.2-141.module_el8.6.0+3263+41cde0c0
  • rubygem-mysql2
    Fixed

    A version is affected if any line below covers it.

    • Affected before 0.5.3-1.module_el8.5.0+118+1ab773e1
    • Affected before 0.5.3-1.module_el8.5.0+2595+0c654ebc
    • Affected before 0.5.3-1.module_el8.6.0+3144+d138acf1
  • rubygem-mysql2-doc
    Fixed in 0.5.3-1.module_el8.5.0+2595+0c654ebc
  • rubygem-pg
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.2.3-1.module_el8.5.0+118+1ab773e1
    • Affected before 1.2.3-1.module_el8.5.0+2595+0c654ebc
    • Affected before 1.2.3-1.module_el8.6.0+3144+d138acf1
  • rubygem-pg-doc
    Fixed in 1.2.3-1.module_el8.5.0+2595+0c654ebc
  • rubygem-power_assert
    Fixed in 1.2.0-141.module_el8.6.0+3263+41cde0c0
  • rubygem-psych
    Fixed in 3.3.2-141.module_el8.6.0+3263+41cde0c0
  • rubygem-rake
    Fixed in 13.0.3-141.module_el8.6.0+3263+41cde0c0
  • rubygem-rbs
    Fixed in 1.4.0-141.module_el8.6.0+3263+41cde0c0
  • rubygem-rdoc
    Fixed in 6.3.3-141.module_el8.6.0+3263+41cde0c0
  • rubygem-rexml
    Fixed in 3.2.5-141.module_el8.6.0+3263+41cde0c0
  • rubygem-rss
    Fixed in 0.2.9-141.module_el8.6.0+3263+41cde0c0
  • rubygem-test-unit
    Fixed in 3.3.7-141.module_el8.6.0+3263+41cde0c0
  • rubygem-typeprof
    Fixed in 0.15.2-141.module_el8.6.0+3263+41cde0c0
  • rubygems
    Fixed in 3.2.33-141.module_el8.6.0+3263+41cde0c0
  • rubygems-devel
    Fixed in 3.2.33-141.module_el8.6.0+3263+41cde0c0

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

AlmaLinux 9

  • ruby
    Fixed in 3.0.4-160.el9_0
  • ruby-default-gems
    Fixed in 3.0.4-160.el9_0
  • ruby-devel
    Fixed in 3.0.4-160.el9_0
  • ruby-doc
    Fixed in 3.0.4-160.el9_0
  • ruby-libs
    Fixed in 3.0.4-160.el9_0
  • rubygem-bigdecimal
    Fixed in 3.0.0-160.el9_0
  • rubygem-bundler
    Fixed in 2.2.33-160.el9_0
  • rubygem-io-console
    Fixed in 0.5.7-160.el9_0
  • rubygem-irb
    Fixed in 1.3.5-160.el9_0
  • rubygem-json
    Fixed in 2.5.1-160.el9_0
  • rubygem-minitest
    Fixed in 5.14.2-160.el9_0
  • rubygem-power_assert
    Fixed in 1.2.0-160.el9_0
  • rubygem-psych
    Fixed in 3.3.2-160.el9_0
  • rubygem-rake
    Fixed in 13.0.3-160.el9_0
  • rubygem-rbs
    Fixed in 1.4.0-160.el9_0
  • rubygem-rdoc
    Fixed in 6.3.3-160.el9_0
  • rubygem-rexml
    Fixed in 3.2.5-160.el9_0
  • rubygem-rss
    Fixed in 0.2.9-160.el9_0
  • rubygem-test-unit
    Fixed in 3.3.7-160.el9_0
  • rubygem-typeprof
    Fixed in 0.15.2-160.el9_0
  • rubygems
    Fixed in 3.2.33-160.el9_0
  • rubygems-devel
    Fixed in 3.2.33-160.el9_0

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Arch Linux

  • ruby
    Fixed in 3.0.4-1

Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.

CloudLinux 8

  • ruby
    Fixed in 3.0.4-141.module_el8.6.0+3263+41cde0c0
  • ruby-default-gems
    Fixed in 3.0.4-141.module_el8.6.0+3263+41cde0c0
  • ruby-devel
    Fixed in 3.0.4-141.module_el8.6.0+3263+41cde0c0
  • ruby-doc
    Fixed in 3.0.4-141.module_el8.6.0+3263+41cde0c0
  • ruby-libs
    Fixed in 3.0.4-141.module_el8.6.0+3263+41cde0c0
  • rubygem-abrt
    Fixed in 0.4.0-1.module_el8.5.0+2595+0c654ebc
  • rubygem-abrt-doc
    Fixed in 0.4.0-1.module_el8.5.0+2595+0c654ebc
  • rubygem-bigdecimal
    Fixed in 3.0.0-141.module_el8.6.0+3263+41cde0c0
  • rubygem-bundler
    Fixed in 2.2.33-141.module_el8.6.0+3263+41cde0c0
  • rubygem-io-console
    Fixed in 0.5.7-141.module_el8.6.0+3263+41cde0c0
  • rubygem-irb
    Fixed in 1.3.5-141.module_el8.6.0+3263+41cde0c0
  • rubygem-json
    Fixed in 2.5.1-141.module_el8.6.0+3263+41cde0c0
  • rubygem-minitest
    Fixed in 5.14.2-141.module_el8.6.0+3263+41cde0c0
  • rubygem-mysql2
    Fixed

    A version is affected if any line below covers it.

    • Affected before 0.5.3-1.module_el8.5.0+118+1ab773e1
    • Affected before 0.5.3-1.module_el8.5.0+2595+0c654ebc
    • Affected before 0.5.3-1.module_el8.6.0+3144+d138acf1
  • rubygem-mysql2-doc
    Fixed in 0.5.3-1.module_el8.5.0+2595+0c654ebc
  • rubygem-pg
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.2.3-1.module_el8.5.0+118+1ab773e1
    • Affected before 1.2.3-1.module_el8.5.0+2595+0c654ebc
    • Affected before 1.2.3-1.module_el8.6.0+3144+d138acf1
  • rubygem-pg-doc
    Fixed in 1.2.3-1.module_el8.5.0+2595+0c654ebc
  • rubygem-power_assert
    Fixed in 1.2.0-141.module_el8.6.0+3263+41cde0c0
  • rubygem-psych
    Fixed in 3.3.2-141.module_el8.6.0+3263+41cde0c0
  • rubygem-rake
    Fixed in 13.0.3-141.module_el8.6.0+3263+41cde0c0
  • rubygem-rbs
    Fixed in 1.4.0-141.module_el8.6.0+3263+41cde0c0
  • rubygem-rdoc
    Fixed in 6.3.3-141.module_el8.6.0+3263+41cde0c0
  • rubygem-rexml
    Fixed in 3.2.5-141.module_el8.6.0+3263+41cde0c0
  • rubygem-rss
    Fixed in 0.2.9-141.module_el8.6.0+3263+41cde0c0
  • rubygem-test-unit
    Fixed in 3.3.7-141.module_el8.6.0+3263+41cde0c0
  • rubygem-typeprof
    Fixed in 0.15.2-141.module_el8.6.0+3263+41cde0c0
  • rubygems
    Fixed in 3.2.33-141.module_el8.6.0+3263+41cde0c0
  • rubygems-devel
    Fixed in 3.2.33-141.module_el8.6.0+3263+41cde0c0

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 9

  • ruby
    Fixed in 3.0.4-160.el9_0
  • ruby-default-gems
    Fixed in 3.0.4-160.el9_0
  • ruby-devel
    Fixed in 3.0.4-160.el9_0
  • ruby-doc
    Fixed in 3.0.4-160.el9_0
  • ruby-libs
    Fixed in 3.0.4-160.el9_0
  • rubygem-bigdecimal
    Fixed in 3.0.0-160.el9_0
  • rubygem-bundler
    Fixed in 2.2.33-160.el9_0
  • rubygem-io-console
    Fixed in 0.5.7-160.el9_0
  • rubygem-irb
    Fixed in 1.3.5-160.el9_0
  • rubygem-json
    Fixed in 2.5.1-160.el9_0
  • rubygem-minitest
    Fixed in 5.14.2-160.el9_0
  • rubygem-power_assert
    Fixed in 1.2.0-160.el9_0
  • rubygem-psych
    Fixed in 3.3.2-160.el9_0
  • rubygem-rake
    Fixed in 13.0.3-160.el9_0
  • rubygem-rbs
    Fixed in 1.4.0-160.el9_0
  • rubygem-rdoc
    Fixed in 6.3.3-160.el9_0
  • rubygem-rexml
    Fixed in 3.2.5-160.el9_0
  • rubygem-rss
    Fixed in 0.2.9-160.el9_0
  • rubygem-test-unit
    Fixed in 3.3.7-160.el9_0
  • rubygem-typeprof
    Fixed in 0.15.2-160.el9_0
  • rubygems
    Fixed in 3.2.33-160.el9_0
  • rubygems-devel
    Fixed in 3.2.33-160.el9_0

Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • ruby3.0
    Fixed in 3.0.2-7ubuntu2.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.