RHSA-2026:50728: Important: ruby:3.3 security, bug fix, and enhancement update

Published Aug 5, 2026
·
Updated

Important: ruby:3.3 security, bug fix, and enhancement update

Other sources

Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks.Security Fix(es): zlib: zlib: Memory corruption via buffer overflow in Zlib::GzipReader (CVE-2026-27820) net-imap: Net::IMAP: Arbitrary IMAP command injection via CRLF sequences in unvalidated input (CVE-2026-42257) ruby/net-imap: ruby: Net::IMAP: Denial of Service via large iteration count in SCRAM authentication (CVE-2026-42256) net-imap: Net::IMAP: Command injection via non-synchronizing literals (CVE-2026-47240) net-imap: Net::IMAP: Arbitrary IMAP command injection due to improper input validation (CVE-2026-47242) net-imap: rubygem-net-imap: Net::IMAP: Denial of Service via malformed command input (CVE-2026-47241) Bug Fix(es) and Enhancement(s): ruby:3.3/ruby: Rebase to the latest Ruby 3.3 release [rhel-8] (JIRA:RHEL-170929) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

— Red Hat

Affected Software

130 affected componentsFixes available
Red Hat Red Hat Enterprise Linux for x86_64
Red Hat Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for ARM 64
Red Hat Red Hat Enterprise Linux for Power, little endian
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for IBM z Systems
Red Hat Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle
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redhat/rubygem-pg<1.5.4-1.module+el8.10.0+21226+b78a28c4.aa
1.5.4-1.module+el8.10.0+21226+b78a28c4.aa
redhat/rubygem-pg-debuginfo<1.5.4-1.module+el8.10.0+21226+b78a28c4.aa
1.5.4-1.module+el8.10.0+21226+b78a28c4.aa
redhat/rubygem-pg-debugsource<1.5.4-1.module+el8.10.0+21226+b78a28c4.aa
1.5.4-1.module+el8.10.0+21226+b78a28c4.aa
redhat/rubygem-psych<5.1.2-8.module+el8.10.0+24567+c4e5368e.aa
5.1.2-8.module+el8.10.0+24567+c4e5368e.aa
redhat/rubygem-psych-debuginfo<5.1.2-8.module+el8.10.0+24567+c4e5368e.aa
5.1.2-8.module+el8.10.0+24567+c4e5368e.aa
redhat/rubygem-racc<1.7.3-8.module+el8.10.0+24567+c4e5368e.aa
1.7.3-8.module+el8.10.0+24567+c4e5368e.aa
redhat/rubygem-racc-debuginfo<1.7.3-8.module+el8.10.0+24567+c4e5368e.aa
1.7.3-8.module+el8.10.0+24567+c4e5368e.aa
redhat/rubygem-rbs<3.4.0-8.module+el8.10.0+24567+c4e5368e.aa
3.4.0-8.module+el8.10.0+24567+c4e5368e.aa
redhat/rubygem-rbs-debuginfo<3.4.0-8.module+el8.10.0+24567+c4e5368e.aa
3.4.0-8.module+el8.10.0+24567+c4e5368e.aa

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/ruby to a version that resolves this vulnerability.

    Fixed in 3.3.12-8.module+el8.10.0+24567+c4e5368e
  2. Upgrade

    Upgrade redhat/rubygem-abrt to a version that resolves this vulnerability.

    Fixed in 0.4.0-1.module+el8.10.0+21226+b78a28c4
  3. Upgrade

    Upgrade redhat/rubygem-mysql2 to a version that resolves this vulnerability.

    Fixed in 0.5.5-1.module+el8.10.0+21226+b78a28c4
  4. Upgrade

    Upgrade redhat/rubygem-pg to a version that resolves this vulnerability.

    Fixed in 1.5.4-1.module+el8.10.0+21226+b78a28c4
  5. Upgrade

    Upgrade redhat/ruby-default-gems to a version that resolves this vulnerability.

    Fixed in 3.3.12-8.module+el8.10.0+24567+c4e5368e
  6. Upgrade

    Upgrade redhat/ruby-doc to a version that resolves this vulnerability.

    Fixed in 3.3.12-8.module+el8.10.0+24567+c4e5368e
  7. Upgrade

    Upgrade redhat/rubygem-abrt-doc to a version that resolves this vulnerability.

    Fixed in 0.4.0-1.module+el8.10.0+21226+b78a28c4
  8. Upgrade

    Upgrade redhat/rubygem-bundler to a version that resolves this vulnerability.

    Fixed in 2.5.22-8.module+el8.10.0+24567+c4e5368e
  9. Upgrade

    Upgrade redhat/rubygem-irb to a version that resolves this vulnerability.

    Fixed in 1.13.1-8.module+el8.10.0+24567+c4e5368e
  10. Upgrade

    Upgrade redhat/rubygem-minitest to a version that resolves this vulnerability.

    Fixed in 5.20.0-8.module+el8.10.0+24567+c4e5368e
  11. Upgrade

    Upgrade redhat/rubygem-mysql2-doc to a version that resolves this vulnerability.

    Fixed in 0.5.5-1.module+el8.10.0+21226+b78a28c4
  12. Upgrade

    Upgrade redhat/rubygem-pg-doc to a version that resolves this vulnerability.

    Fixed in 1.5.4-1.module+el8.10.0+21226+b78a28c4
  13. Upgrade

    Upgrade redhat/rubygem-rake to a version that resolves this vulnerability.

    Fixed in 13.1.0-8.module+el8.10.0+24567+c4e5368e
  14. Upgrade

    Upgrade redhat/rubygem-rdoc to a version that resolves this vulnerability.

    Fixed in 6.6.3.1-8.module+el8.10.0+24567+c4e5368e
  15. Upgrade

    Upgrade redhat/rubygem-rexml to a version that resolves this vulnerability.

    Fixed in 3.4.4-8.module+el8.10.0+24567+c4e5368e
  16. Upgrade

    Upgrade redhat/rubygem-rss to a version that resolves this vulnerability.

    Fixed in 0.3.1-8.module+el8.10.0+24567+c4e5368e
  17. Upgrade

    Upgrade redhat/rubygem-test-unit to a version that resolves this vulnerability.

    Fixed in 3.6.1-8.module+el8.10.0+24567+c4e5368e
  18. Upgrade

    Upgrade redhat/rubygem-typeprof to a version that resolves this vulnerability.

    Fixed in 0.21.9-8.module+el8.10.0+24567+c4e5368e
  19. Upgrade

    Upgrade redhat/rubygems to a version that resolves this vulnerability.

    Fixed in 3.5.22-8.module+el8.10.0+24567+c4e5368e
  20. Upgrade

    Upgrade redhat/rubygems-devel to a version that resolves this vulnerability.

    Fixed in 3.5.22-8.module+el8.10.0+24567+c4e5368e
  21. Upgrade

    Upgrade redhat/ruby-bundled-gems to a version that resolves this vulnerability.

    Fixed in 3.3.12-8.module+el8.10.0+24567+c4e5368e
  22. Upgrade

    Upgrade redhat/ruby-bundled-gems-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.3.12-8.module+el8.10.0+24567+c4e5368e
  23. Upgrade

    Upgrade redhat/ruby-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.3.12-8.module+el8.10.0+24567+c4e5368e
  24. Upgrade

    Upgrade redhat/ruby-debugsource to a version that resolves this vulnerability.

    Fixed in 3.3.12-8.module+el8.10.0+24567+c4e5368e
  25. Upgrade

    Upgrade redhat/ruby-devel to a version that resolves this vulnerability.

    Fixed in 3.3.12-8.module+el8.10.0+24567+c4e5368e
  26. Upgrade

    Upgrade redhat/ruby-libs to a version that resolves this vulnerability.

    Fixed in 3.3.12-8.module+el8.10.0+24567+c4e5368e
  27. Upgrade

    Upgrade redhat/ruby-libs-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.3.12-8.module+el8.10.0+24567+c4e5368e
  28. Upgrade

    Upgrade redhat/rubygem-bigdecimal to a version that resolves this vulnerability.

    Fixed in 3.1.5-8.module+el8.10.0+24567+c4e5368e
  29. Upgrade

    Upgrade redhat/rubygem-bigdecimal-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.1.5-8.module+el8.10.0+24567+c4e5368e
  30. Upgrade

    Upgrade redhat/rubygem-io-console to a version that resolves this vulnerability.

    Fixed in 0.7.1-8.module+el8.10.0+24567+c4e5368e
  31. Upgrade

    Upgrade redhat/rubygem-io-console-debuginfo to a version that resolves this vulnerability.

    Fixed in 0.7.1-8.module+el8.10.0+24567+c4e5368e
  32. Upgrade

    Upgrade redhat/rubygem-json to a version that resolves this vulnerability.

    Fixed in 2.7.2-8.module+el8.10.0+24567+c4e5368e
  33. Upgrade

    Upgrade redhat/rubygem-json-debuginfo to a version that resolves this vulnerability.

    Fixed in 2.7.2-8.module+el8.10.0+24567+c4e5368e
  34. Upgrade

    Upgrade redhat/rubygem-mysql2-debuginfo to a version that resolves this vulnerability.

    Fixed in 0.5.5-1.module+el8.10.0+21226+b78a28c4
  35. Upgrade

    Upgrade redhat/rubygem-mysql2-debugsource to a version that resolves this vulnerability.

    Fixed in 0.5.5-1.module+el8.10.0+21226+b78a28c4
  36. Upgrade

    Upgrade redhat/rubygem-pg-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.5.4-1.module+el8.10.0+21226+b78a28c4
  37. Upgrade

    Upgrade redhat/rubygem-pg-debugsource to a version that resolves this vulnerability.

    Fixed in 1.5.4-1.module+el8.10.0+21226+b78a28c4
  38. Upgrade

    Upgrade redhat/rubygem-psych to a version that resolves this vulnerability.

    Fixed in 5.1.2-8.module+el8.10.0+24567+c4e5368e
  39. Upgrade

    Upgrade redhat/rubygem-psych-debuginfo to a version that resolves this vulnerability.

    Fixed in 5.1.2-8.module+el8.10.0+24567+c4e5368e
  40. Upgrade

    Upgrade redhat/rubygem-racc to a version that resolves this vulnerability.

    Fixed in 1.7.3-8.module+el8.10.0+24567+c4e5368e
  41. Upgrade

    Upgrade redhat/rubygem-racc-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.7.3-8.module+el8.10.0+24567+c4e5368e
  42. Upgrade

    Upgrade redhat/rubygem-rbs to a version that resolves this vulnerability.

    Fixed in 3.4.0-8.module+el8.10.0+24567+c4e5368e
  43. Upgrade

    Upgrade redhat/rubygem-rbs-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.4.0-8.module+el8.10.0+24567+c4e5368e
  44. Upgrade

    Upgrade redhat/ruby to a version that resolves this vulnerability.

    Fixed in 3.3.12-8.module+el8.10.0+24567+c4e5368e.aa
  45. Upgrade

    Upgrade redhat/ruby-bundled-gems to a version that resolves this vulnerability.

    Fixed in 3.3.12-8.module+el8.10.0+24567+c4e5368e.aa
  46. Upgrade

    Upgrade redhat/ruby-bundled-gems-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.3.12-8.module+el8.10.0+24567+c4e5368e.aa
  47. Upgrade

    Upgrade redhat/ruby-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.3.12-8.module+el8.10.0+24567+c4e5368e.aa
  48. Upgrade

    Upgrade redhat/ruby-debugsource to a version that resolves this vulnerability.

    Fixed in 3.3.12-8.module+el8.10.0+24567+c4e5368e.aa
  49. Upgrade

    Upgrade redhat/ruby-devel to a version that resolves this vulnerability.

    Fixed in 3.3.12-8.module+el8.10.0+24567+c4e5368e.aa
  50. Upgrade

    Upgrade redhat/ruby-libs to a version that resolves this vulnerability.

    Fixed in 3.3.12-8.module+el8.10.0+24567+c4e5368e.aa
  51. Upgrade

    Upgrade redhat/ruby-libs-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.3.12-8.module+el8.10.0+24567+c4e5368e.aa
  52. Upgrade

    Upgrade redhat/rubygem-bigdecimal to a version that resolves this vulnerability.

    Fixed in 3.1.5-8.module+el8.10.0+24567+c4e5368e.aa
  53. Upgrade

    Upgrade redhat/rubygem-bigdecimal-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.1.5-8.module+el8.10.0+24567+c4e5368e.aa
  54. Upgrade

    Upgrade redhat/rubygem-io-console to a version that resolves this vulnerability.

    Fixed in 0.7.1-8.module+el8.10.0+24567+c4e5368e.aa
  55. Upgrade

    Upgrade redhat/rubygem-io-console-debuginfo to a version that resolves this vulnerability.

    Fixed in 0.7.1-8.module+el8.10.0+24567+c4e5368e.aa
  56. Upgrade

    Upgrade redhat/rubygem-json to a version that resolves this vulnerability.

    Fixed in 2.7.2-8.module+el8.10.0+24567+c4e5368e.aa
  57. Upgrade

    Upgrade redhat/rubygem-json-debuginfo to a version that resolves this vulnerability.

    Fixed in 2.7.2-8.module+el8.10.0+24567+c4e5368e.aa
  58. Upgrade

    Upgrade redhat/rubygem-mysql2 to a version that resolves this vulnerability.

    Fixed in 0.5.5-1.module+el8.10.0+21226+b78a28c4.aa
  59. Upgrade

    Upgrade redhat/rubygem-mysql2-debuginfo to a version that resolves this vulnerability.

    Fixed in 0.5.5-1.module+el8.10.0+21226+b78a28c4.aa
  60. Upgrade

    Upgrade redhat/rubygem-mysql2-debugsource to a version that resolves this vulnerability.

    Fixed in 0.5.5-1.module+el8.10.0+21226+b78a28c4.aa
  61. Upgrade

    Upgrade redhat/rubygem-pg to a version that resolves this vulnerability.

    Fixed in 1.5.4-1.module+el8.10.0+21226+b78a28c4.aa
  62. Upgrade

    Upgrade redhat/rubygem-pg-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.5.4-1.module+el8.10.0+21226+b78a28c4.aa
  63. Upgrade

    Upgrade redhat/rubygem-pg-debugsource to a version that resolves this vulnerability.

    Fixed in 1.5.4-1.module+el8.10.0+21226+b78a28c4.aa
  64. Upgrade

    Upgrade redhat/rubygem-psych to a version that resolves this vulnerability.

    Fixed in 5.1.2-8.module+el8.10.0+24567+c4e5368e.aa
  65. Upgrade

    Upgrade redhat/rubygem-psych-debuginfo to a version that resolves this vulnerability.

    Fixed in 5.1.2-8.module+el8.10.0+24567+c4e5368e.aa
  66. Upgrade

    Upgrade redhat/rubygem-racc to a version that resolves this vulnerability.

    Fixed in 1.7.3-8.module+el8.10.0+24567+c4e5368e.aa
  67. Upgrade

    Upgrade redhat/rubygem-racc-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.7.3-8.module+el8.10.0+24567+c4e5368e.aa
  68. Upgrade

    Upgrade redhat/rubygem-rbs to a version that resolves this vulnerability.

    Fixed in 3.4.0-8.module+el8.10.0+24567+c4e5368e.aa
  69. Upgrade

    Upgrade redhat/rubygem-rbs-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.4.0-8.module+el8.10.0+24567+c4e5368e.aa
  70. Upgrade

    Upgrade ruby:3.3 to a version that resolves this vulnerability.

    Fixed in 3.3Patch JIRA:RHEL-170929
  71. Compensating control

    If you must keep a vulnerable net-imap/rubygem-net-imap deployment temporarily, restrict or remove any ability for untrusted users to influence IMAP command inputs that could contain CRLF sequences or non-synchronizing literals (mitigates CVE-2026-42257 and CVE-2026-47240/47242).

Event History

Aug 5, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
Advisory Published
via Red Hat·08:28 AM
Data Sourced
via Red Hat·08:28 AM
Severity
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Frequently Asked Questions

1

What is the severity of RHSA-2026:50728?

The severity of RHSA-2026:50728 is classified as high, with a score of 7.

2

What vulnerabilities does RHSA-2026:50728 address?

RHSA-2026:50728 addresses vulnerabilities related to memory corruption via buffer overflow in Zlib::GzipReader.

3

How do I fix RHSA-2026:50728?

To fix RHSA-2026:50728, you need to update to the latest version of the affected Ruby packages provided by Red Hat.

4

What software is affected by RHSA-2026:50728?

Affected software includes redhat/ruby, redhat/rubygem-mysql2, redhat/rubygem-pg, and other Ruby-related packages.

5

What are the common vulnerabilities associated with RHSA-2026:50728?

Common vulnerabilities associated with RHSA-2026:50728 include Buffer Overflow, Input Validation, and Command Injection.

Company

Resources

Contact

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