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Oracle Linux 9 : ruby:4.0 (ELSA-2026-72484)

high Nessus Plugin ID 351238

Synopsis

The remote Oracle Linux host is missing a security update.

Description

The remote Oracle Linux 9 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-72484 advisory.

 - Fix resolv: do not register on-demand classes for unknown DNS types and SvcParamKeys to prevent memory exhaustion (CVE-2026-80212) Resolves: RHEL-252035
 - Fix Net::IMAP ResponseReader quadratic complexity vulnerability. (CVE-2026-42245) Resolves: RHEL-181690
 - Fix Net::IMAP STARTTLS stripping vulnerability. (CVE-2026-42246) Resolves: RHEL-181771
 - Fix Net::IMAP command injection vulnerability via unvalidated Symbol arguments. (CVE-2026-42258) Resolves: RHEL-181803
 - Fix ERB: Arbitrary code execution via deserialization bypass (CVE-2026-41316) Resolves: RHEL-171258
 - Fix JSON: Denial of Service or Information Disclosure via format string injection (CVE-2026-33210) Resolves: RHEL-173458
 - Fix possible denial of service in resolv gem (CVE-2025-24294)
 - Fix URI Credential Leakage Bypass previous fixes. (CVE-2025-61594)
 - Fix REXML denial of service. (CVE-2025-58767) Resolves: RHEL-126728
 - Fix Net::IMAP vulnerable to possible DoS by memory exhaustion. (CVE-2025-25186)
 - Fix Denial of Service in CGI::Cookie.parse. (CVE-2025-27219) Resolves: RHEL-86109
 - Fix userinfo leakage in URI#join, URI#merge and URI#+. (CVE-2025-27221)

 rubygem-mysql2

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://linux.oracle.com/errata/ELSA-2026-72484.html

Plugin Details

Severity: High

ID: 351238

File Name: oraclelinux_ELSA-2026-72484.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 9/29/2026

Updated: 9/29/2026

Supported Sensors: Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.62

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-80212

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:oracle:linux:9, p-cpe:/a:oracle:linux:ruby-bundled-gems, p-cpe:/a:oracle:linux:ruby-default-gems, p-cpe:/a:oracle:linux:ruby-devel, p-cpe:/a:oracle:linux:ruby-doc, p-cpe:/a:oracle:linux:ruby-libs, p-cpe:/a:oracle:linux:ruby, p-cpe:/a:oracle:linux:rubygem-bigdecimal, p-cpe:/a:oracle:linux:rubygem-bundler, p-cpe:/a:oracle:linux:rubygem-io-console, p-cpe:/a:oracle:linux:rubygem-irb, p-cpe:/a:oracle:linux:rubygem-json, p-cpe:/a:oracle:linux:rubygem-minitest, p-cpe:/a:oracle:linux:rubygem-mysql2-doc, p-cpe:/a:oracle:linux:rubygem-mysql2, p-cpe:/a:oracle:linux:rubygem-pg-doc, p-cpe:/a:oracle:linux:rubygem-pg, p-cpe:/a:oracle:linux:rubygem-power_assert, p-cpe:/a:oracle:linux:rubygem-psych, p-cpe:/a:oracle:linux:rubygem-racc, p-cpe:/a:oracle:linux:rubygem-rake, p-cpe:/a:oracle:linux:rubygem-rbs, p-cpe:/a:oracle:linux:rubygem-rdoc, p-cpe:/a:oracle:linux:rubygem-rexml, p-cpe:/a:oracle:linux:rubygem-rss, p-cpe:/a:oracle:linux:rubygem-test-unit, p-cpe:/a:oracle:linux:rubygem-typeprof, p-cpe:/a:oracle:linux:rubygems-devel, p-cpe:/a:oracle:linux:rubygems

Required KB Items: Host/OracleLinux, Host/RedHat/release, Host/RedHat/rpm-list, Host/local_checks_enabled

Exploit Ease: No known exploits are available

Patch Publication Date: 9/29/2026

Vulnerability Publication Date: 8/27/2026

Reference Information

CVE: CVE-2026-80212