Red Hat Fixes Ruby 3.3 Regular-Expression Flaws on RHEL 10
Tech GuruQuick Answer
Check Ruby 3.3 on RHEL 10. Apply RHSA-2026:96235 from the matching entitled repository. Restart Ruby services, confirm the selected runtime and test representative pattern-processing workflows.
Confirm Scope And Apply The Supported Remediation
What to do now: Record distribution Ruby packages, user-supplied patterns and long-running application processes. RHEL 10: installations of the Ruby 3.3 packages requiring RHSA-2026:96235. Match the full installed RPM, architecture and repository to the vendor product tree; a universal upstream version range is not stated. Apply RHSA-2026:96235 through the entitled Red Hat repositories. The fixed source build is ruby-0:3.3.13-16.el10_2. Install the matching binary packages for the supported stream and architecture. Restart Ruby services, confirm the selected runtime and test representative pattern-processing workflows.
Last verified: 2026-11-09 UTC. Recheck the authoritative advisory and supported distribution channel before changing production.
Scope And Authority
| Product scope | RHEL 10; Ruby 3.3 |
|---|---|
| Advisory | RHSA-2026:96235 |
| CVEs | CVE-2026-110264, CVE-2026-89078, CVE-2026-93577, CVE-2026-97229 |
| Authoritative release date | November 9, 2026 at 12:46:50 UTC, from Red Hat CSAF initial_release_date. |
| Authority revision date | Red Hat records the substantive last-updated version at 2026-11-09T12:46:50+00:00. The CSAF generation timestamp is 2026-11-09T16:42:58+00:00; generation alone is not a material advisory revision. |
| Affected versions | RHEL 10: installations of the Ruby 3.3 packages requiring RHSA-2026:96235. Match the full installed RPM, architecture and repository to the vendor product tree; a universal upstream version range is not stated. |
| Fixed version | ruby-0:3.3.13-16.el10_2 |
| CVSS base score | 9.8 (highest authority-stated CVSS 3.1 base score) |
| CVSS severity | Critical (CVSS); Moderate (Red Hat impact) |
| Exploitation status | Red Hat does not state exploitation in this advisory.; no exploitation claim is inferred. |
Authority CVSS by Vulnerability
| CVE-2026-89078 | CVSS 3.1: 9.8 (Critical) |
|---|---|
| CVE-2026-93577 | CVSS 3.1: 9.8 (Critical) |
| CVE-2026-97229 | CVSS 3.1: 9.8 (Critical) |
| CVE-2026-110264 | CVSS 3.1: 9.8 (Critical) |
What Changed
Red Hat released RHSA-2026:96235 for RHEL 10, addressing integer overflows in regular-expression compilation and a double-free in parsing. The update provides the distribution packages listed below; keep the Red Hat release and support channel matched during remediation.
What To Validate Now
- Inventory. Record distribution Ruby packages, user-supplied patterns and long-running application processes.
- Establish applicability. RHEL 10: installations of the Ruby 3.3 packages requiring RHSA-2026:96235. Match the full installed RPM, architecture and repository to the vendor product tree; a universal upstream version range is not stated.
- Remediate. Apply RHSA-2026:96235 through the entitled Red Hat repositories. The fixed source build is ruby-0:3.3.13-16.el10_2. Install the matching binary packages for the supported stream and architecture.
- Validate. Restart Ruby services, confirm the selected runtime and test representative pattern-processing workflows.
- Retain evidence. Preserve asset and owner identifiers, the applicability decision, before-and-after versions, change approval, installation output, validation results, and any exception or rollback record.
Operational Cautions
Red Hat advises against compiling untrusted regular expressions. Regexp.timeout and pattern-length limits do not protect against these compiler flaws. Red Hat impact is Moderate despite the authority-stated Critical CVSS score.
Evidence To Retain
- Exact product, release stream, package or application version, enabled feature, environment, and accountable owner.
- UTC timestamps, authority revision, approved change record, installer or package-manager output, and resulting version.
- Relevant logs and monitoring evidence, test results, exceptions, compensating controls, and rollback decisions.
Related TechGeeks Resources
Authoritative References
Correction policy: If the authority changes affected versions, fixed versions, severity, exploitation information, mitigations, or required action, TechGeeks will update this notice and its verification date.
Advisory facts are attributed to Red Hat Inc. The linked CSAF content is licensed under CC BY 4.0; TechGeeks operational guidance is summarized for this notice.
