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Advisory severityCritical9.8Red Hat Linux Exploited CISA KEV Updated

Critical [CVE-2026-97229] integer overflow issue in CI/CD regular expression compiler

This critical-severity Red Hat Linux advisory covers CVE-2026-97229.

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CVE-2026-97229 Source published Source updated

VulniPulse record published Record updated

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Red Hat LinuxUnclassified
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Summary

integer overflow issue in CI/CD regular expression compiler. Red Hat rates this critical (CVSS 9.8).

Weakness: CWE-190. Red Hat lists fixing advisory RHSA-2026:88861 with package ruby3-3-main-3.3.13-23.8.hum1, ruby3-4-main-3.4.12-33.1.hum1, ruby4-0-main-4.0.9-41.hum1.

CISA Known Exploited Vulnerability

Listed:
Oct 29, 2026 · federal remediation due Nov 1, 2026
Required action:
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

KEV is a prioritization signal from CISA. Remediation detail comes from the vendor advisory.

Affected versions
  • < 19.2
  • < 19.2.8
  • < 19.3
  • < 19.3.5
  • < 19.4
  • < 19.4.2

Official advisory · high-confidence parse· fetched 3 days ago·verify at source

Fixed versions
  • ruby3-3-main-3.3.13-23.8.hum1
  • ruby3-4-main-3.4.12-33.1.hum1
  • ruby4-0-main-4.0.9-41.hum1
  • RHSA-2026:88861

Official advisory · high-confidence parse· fetched 3 days ago·verify at source

Mitigation

Upgrade to a fixed release: ruby3-3-main-3.3.13-23.8.hum1, ruby3-4-main-3.4.12-33.1.hum1, ruby4-0-main-4.0.9-41.hum1, RHSA-2026:88861. That is the remediation for this advisory.

The vendor advisory may list interim mitigations or workarounds not captured here. Review it before change work.

Official advisory · high-confidence parse· fetched 3 days ago·verify at source

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