Ella Core has a Denial of Service via SCTP connection cleanup deadlock in github.com/ellanetworks/core
Ella Core has a Denial of Service via SCTP connection cleanup deadlock in github.com/ellanetworks/core
02 / AFFECTED SOFTWARE
Affected packages
36 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
## 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.
Ella Core has a Denial of Service via SCTP connection cleanup deadlock in github.com/ellanetworks/core
Ella Core is a 5G core designed for private networks. Prior to version 1.7.0, a deadlock in the AMF's SCTP notification handler causes the entire AMF control plane to hang until the process is restarted. An attacker with access to the N2 interface can cause Ella Core to hang, resulting in a denial of service for all subscribers. Version 1.7.0 adds 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.
05 / REFERENCES
Further evidence
- https://github.com/ellanetworks/core
- https://github.com/ellanetworks/core/commit/999f606c5cae261471d9e3f063d7ecd1bd754076
- https://github.com/ellanetworks/core/releases/tag/v1.7.0
- https://github.com/ellanetworks/core/security/advisories/GHSA-9h59-p45g-445h
- https://nvd.nist.gov/vuln/detail/CVE-2026-33904
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33904.json