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Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process. Vulnerability Reference: A flaw was found in kronosnet where it fails to properly sanitize sensitive memory locations following cryptographic configuration adjustments, potentially exposing encryption keys to local attackers. Component / Vulnerable Part: kronosnet -> Core cryptographic configuration and memory management subsystems (https://github.com/kronosnet/kronosnet/). Technical Analysis & Root Cause: When cryptographic configuration changes are performed within kronosnet, the internal memory structures holding active encryption keys are freed or reallocated. However, the runtime implementation lacks an explicit memory-wiping routine (such as memset_s or equivalent secure clearing operations) before releasing these blocks back to the system heap. As a result, the raw cryptographic key material remains resident in unallocated memory space. A local attacker with the capability to exploit secondary memory disclosure vulnerabilities or inspect uninitialized heap segments can recover the active encryption key. Impact: With the recovered cryptographic key, a local attacker can decrypt network communications handled by the kronosnet framework or inject unauthorized packets into the cluster traffic, leading to data exposure and cluster or system instability.
https://github.com/kronosnet/kronosnet/commit/6bbc8572f7edeb53abd259647b97d74945f68e75
FEDORA-2026-3e85d87212 (kronosnet-1.35-1.fc45) has been submitted as an update to Fedora 45. https://bodhi.fedoraproject.org/updates/FEDORA-2026-3e85d87212
FEDORA-2026-3e85d87212 (kronosnet-1.35-1.fc45) has been pushed to the Fedora 45 stable repository. If problem still persists, please make note of it in this bug report.