RLSA-2026:33540

Synopsis

Important: ruby4.0 security update

Description

Ruby is the interpreted scripting language for quick and easy object-oriented programming. It has many features to process text files and to do system management tasks (as in Perl). It is simple, straight-forward, and extensible.

Security Fix(es):

* ruby: net-imap: Net::IMAP: Denial of Service via crafted IMAP responses (CVE-2026-42245)

* ruby/net-imap: ruby: Net::IMAP: IMAP Command Injection via Symbol Arguments (CVE-2026-42258)

* net-imap: ruby: Net::IMAP: Information disclosure via man-in-the-middle attack bypassing TLS (CVE-2026-42246)

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.

Affected products

Rocky Linux 10 aarch64 Rocky Linux 10 ppc64le Rocky Linux 10 riscv64 Rocky Linux 10 s390x Rocky Linux 10 x86_64

Fixes

2468495 2468499 2468498

CVEs

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

Affected packages

Rocky Linux 10 s390x - AppStream

ruby4.0-rubygem-mysql2-0:0.5.7-35.el10_2.s390x.rpm ruby4.0-rubygem-pg-debuginfo-0:1.6.3-35.el10_2.s390x.rpm ruby4.0-rubygem-mysql2-debuginfo-0:0.5.7-35.el10_2.s390x.rpm ruby4.0-devel-0:4.0.3-35.el10_2.s390x.rpm ruby4.0-debuginfo-0:4.0.3-35.el10_2.s390x.rpm ruby4.0-rubygem-pg-0:1.6.3-35.el10_2.s390x.rpm ruby4.0-0:4.0.3-35.el10_2.s390x.rpm ruby4.0-debugsource-0:4.0.3-35.el10_2.s390x.rpm ruby4.0-0:4.0.3-35.el10_2.src.rpm

Rocky Linux 10 aarch64 - AppStream

ruby4.0-rubygem-mysql2-debuginfo-0:0.5.7-35.el10_2.aarch64.rpm ruby4.0-rubygem-pg-0:1.6.3-35.el10_2.aarch64.rpm ruby4.0-rubygem-mysql2-0:0.5.7-35.el10_2.aarch64.rpm ruby4.0-debugsource-0:4.0.3-35.el10_2.aarch64.rpm ruby4.0-rubygem-pg-debuginfo-0:1.6.3-35.el10_2.aarch64.rpm ruby4.0-debuginfo-0:4.0.3-35.el10_2.aarch64.rpm ruby4.0-0:4.0.3-35.el10_2.aarch64.rpm ruby4.0-devel-0:4.0.3-35.el10_2.aarch64.rpm ruby4.0-0:4.0.3-35.el10_2.src.rpm

Rocky Linux 10 ppc64le - AppStream

ruby4.0-rubygem-mysql2-0:0.5.7-35.el10_2.ppc64le.rpm ruby4.0-debuginfo-0:4.0.3-35.el10_2.ppc64le.rpm ruby4.0-rubygem-pg-0:1.6.3-35.el10_2.ppc64le.rpm ruby4.0-0:4.0.3-35.el10_2.ppc64le.rpm ruby4.0-debugsource-0:4.0.3-35.el10_2.ppc64le.rpm ruby4.0-rubygem-pg-debuginfo-0:1.6.3-35.el10_2.ppc64le.rpm ruby4.0-rubygem-mysql2-debuginfo-0:0.5.7-35.el10_2.ppc64le.rpm ruby4.0-devel-0:4.0.3-35.el10_2.ppc64le.rpm ruby4.0-0:4.0.3-35.el10_2.src.rpm

Rocky Linux 10 x86_64 - AppStream

ruby4.0-rubygem-pg-debuginfo-0:1.6.3-35.el10_2.x86_64.rpm ruby4.0-debugsource-0:4.0.3-35.el10_2.x86_64.rpm ruby4.0-devel-0:4.0.3-35.el10_2.x86_64.rpm ruby4.0-rubygem-mysql2-0:0.5.7-35.el10_2.x86_64.rpm ruby4.0-rubygem-pg-0:1.6.3-35.el10_2.x86_64.rpm ruby4.0-rubygem-mysql2-debuginfo-0:0.5.7-35.el10_2.x86_64.rpm ruby4.0-0:4.0.3-35.el10_2.x86_64.rpm ruby4.0-debuginfo-0:4.0.3-35.el10_2.x86_64.rpm ruby4.0-0:4.0.3-35.el10_2.src.rpm

Rocky Linux 10 aarch64 - CRB

ruby4.0-doc-0:4.0.3-35.el10_2.noarch.rpm

Rocky Linux 10 ppc64le - CRB

ruby4.0-doc-0:4.0.3-35.el10_2.noarch.rpm

Rocky Linux 10 riscv64 - CRB

ruby4.0-doc-0:4.0.3-35.el10_2.noarch.rpm

Rocky Linux 10 s390x - CRB

ruby4.0-doc-0:4.0.3-35.el10_2.noarch.rpm

Rocky Linux 10 x86_64 - CRB

ruby4.0-doc-0:4.0.3-35.el10_2.noarch.rpm

Rocky Linux 10 riscv64 - AppStream

ruby4.0-0:4.0.3-35.el10_2.src.rpm