What’s Vulnerable › Vulnerabilities

CVE-2026-95619: Gcc: libstdc++ integer overflow in `new` operator

• Severity: high (CVSS 7.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-22 · updated 2026-11-01
• Weakness: CWE-190

Description

A flaw was found in libstdc++. An integer overflow can occur when processing large inputs to the aligned operator new in the C++ library. This vulnerability could lead to an undersized memory allocation, potentially causing memory corruption or application instability.

Affected products

• Red Hat OpenShift Container Platform 4.18: all versions
• Red Hat Enterprise Linux 8: all versions — fixed in 0:8.5.0-30.el8_10
• Red Hat Enterprise Linux 9: all versions
• Red Hat Hardened Images: all versions — fixed in 16.2.1-2.hum1
• Red Hat OpenShift Container Platform 5: all versions

How to fix

Upgrade to a fixed version: Red Hat Enterprise Linux 8 0:8.5.0-30.el8_10; Red Hat Hardened Images 16.2.1-2.hum1. Check the vendor advisory for mitigations.

References

• https://access.redhat.com/errata/RHSA-2026:58503
• https://access.redhat.com/errata/RHSA-2026:67275
• https://access.redhat.com/errata/RHSA-2026:89830
• https://access.redhat.com/security/cve/CVE-2026-95619
• https://bugzilla.redhat.com/show_bug.cgi?id=2537811

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