GitHub Advisoryadvisory · Go
GHSA-9h59-p45g-445h Ella Core has a Denial of Service via SCTP connection cleanup deadlock
MEDIUM
Official page ↗
- Aliases
- CVE-2026-33904
- Ecosystem
- Go
- Packages
- github.com/ellanetworks/core
- Severity
- Moderate
- CVSS vector
- CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-833
- Reviewed
- 2026-03-26
Affected packages
• Go github.com/ellanetworks/core: < 1.7.0 → fixed in 1.7.0
Description
Summary
A deadlock in the AMF's SCTP notification handler causes the entire AMF control plane to hang until the process is restarted.
Impact
An attacker with access to the N2 interface can cause Ella Core to hang, resulting in a denial of service for all subscribers.
Fix
Add deferred Radio cleanup in serveConn SCTP server so that every connection exit path removes the radio. Remove the stale-entry scan from SCTP Notification handling.
Related
Alias · CVE (1)
- CVE-2026-33904 Ella Core is a 5G core designed for private networks. vulnerability
Weakness · CWE (1)
- CWE-833 Deadlock weakness
References
- https://github.com/ellanetworks/core/security/advisories/GHSA-9h59-p45g-445h web
- https://nvd.nist.gov/vuln/detail/CVE-2026-33904 advisory
- https://github.com/ellanetworks/core/commit/999f606c5cae261471d9e3f063d7ecd1bd754076 web
- https://github.com/ellanetworks/core package
- https://github.com/ellanetworks/core/releases/tag/v1.7.0 web