[El-errata] ELSA-2026-33540 Important: Oracle Linux 10 ruby4.0 security update

[Errata Announcements for Oracle Linux]

Oracle Linux Security Advisory ELSA-2026-33540

http://linux.oracle.com/errata/ELSA-2026-33540.html

The following updated rpms for Oracle Linux 10 have been uploaded to the Unbreakable Linux Network:

x86_64:
ruby4.0-4.0.3-35.el10_2.x86_64.rpm
ruby4.0-devel-4.0.3-35.el10_2.x86_64.rpm
ruby4.0-doc-4.0.3-35.el10_2.noarch.rpm
ruby4.0-rubygem-mysql2-0.5.7-35.el10_2.x86_64.rpm
ruby4.0-rubygem-pg-1.6.3-35.el10_2.x86_64.rpm

aarch64:
ruby4.0-4.0.3-35.el10_2.aarch64.rpm
ruby4.0-devel-4.0.3-35.el10_2.aarch64.rpm
ruby4.0-doc-4.0.3-35.el10_2.noarch.rpm
ruby4.0-rubygem-mysql2-0.5.7-35.el10_2.aarch64.rpm
ruby4.0-rubygem-pg-1.6.3-35.el10_2.aarch64.rpm


SRPMS:
http://oss.oracle.com/ol10/SRPMS-updates/ruby4.0-4.0.3-35.el10_2.src.rpm

Related CVEs:

CVE-2026-42245
CVE-2026-42246
CVE-2026-42258




Description of changes:

[4.0.3-35]
- Fix Net::IMAP ResponseReader quadratic complexity vulnerability (CVE-2026-42245)
  Includes core fix plus additional performance optimizations
  Resolves: RHEL-181675
- Fix Net::IMAP STARTTLS stripping vulnerability (CVE-2026-42246)
  Resolves: RHEL-181767
- Fix Net::IMAP command injection vulnerability via unvalidated Symbol arguments (CVE-2026-42258)
  Resolves: RHEL-181793

[4.0.3-34]
- Upgrade to Ruby 4.0.3.
  Resolves: RHEL-171239
- Fix ERB: Arbitrary code execution via bypass
 (CVE-2026-41316)
  Resolves: RHEL-170910
- Fix JSON: Denial of Service or Information Disclosure via format string injection
 (CVE-2026-33210)
 Resolves: RHEL-173457