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CVE-2026-15811 Red Hat CVE debrief

A vulnerability was found in kronosnet's cryptographic configuration management. The framework does not correctly zero-out or wipe sensitive memory segments after executing changes to its cryptographic configuration. This omission leaves raw encryption keys resident in memory after the associated structures are freed. A local attacker capable of leveraging memory disclosure techniques could exploit this flaw to retrieve the active encryption key, allowing them to decrypt cluster network communications or inject malicious packets to cause severe high-availability cluster instability.

Vendor
Red Hat
Product
Red Hat Enterprise Linux 10
CVSS
MEDIUM 5.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-21
Original CVE updated
2026-08-21
Advisory published
2026-07-21
Advisory updated
2026-08-21

Who should care

System administrators and security teams responsible for kronosnet installations, particularly those using version <=1.34, should be aware of this vulnerability and take defensive actions to mitigate the risk.

Technical summary

The vulnerability in kronosnet's cryptographic configuration management allows local attackers to retrieve active encryption keys by leveraging memory disclosure techniques. This can lead to decryption of cluster network communications or injection of malicious packets, causing severe high-availability cluster instability. System administrators should assess their installations, particularly those using version <=1.34, and consider applying compensating controls to monitor and restrict access to sensitive memory segments until vendor remediation is available.

Defensive priority

Medium-priority defensive actions are required to address the vulnerability in kronosnet's cryptographic configuration management.

Recommended defensive actions

  • Inventory and assess kronosnet installations for version <=1.34
  • Implement compensating controls to monitor and restrict access to sensitive memory segments
  • Review and update cryptographic configuration management to ensure proper zero-out or wipe of sensitive memory segments
  • Monitor for suspicious activity and exception tracking
  • Consider applying vendor remediation when available

Evidence notes

The vulnerability was found in kronosnet version <=1.34. The framework does not correctly zero-out or wipe sensitive memory segments after executing changes to its cryptographic configuration. Limited information is available about the affected scope and vendor remediation.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-15811 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-15811

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-15811 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-15811

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.