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GHSA-mc29-hmx6-856q

Ella Core has handover failures during concurrent Security Mode Command

Source: GitHub Advisory Database (reviewed) Low CVE-2026-44474

Packages

EcosystemPackageAffectedFixed in
Go github.com/ellanetworks/core < 1.10.0 1.10.0

Details

As written in the advisory (Markdown source, shown as plain text).

## Summary Ella Core didn't enforce security rules on concurrent running of security procedures defined in TS 33.501 §6.9.5.1 — it could send a NAS Security Mode Command while an N2 handover was still pending (and vice versa). ## Impact Concurrent Security Mode Command and N2 handover produce a KgNB mismatch between the UE and target gNB, causing the handover to fail. Requires a stalled gNB + re-registration race to trigger. ## Fix Ella Core now enforces both rules from §6.9.5.1, blocking concurrent Security Mode Command and N2 handover procedures.

References

External links from the advisory. They lead to third-party sites.