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CVE-2026-33904 Moderate

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

Exploit probability 0.2%
Published April 2, 2026
Required by Not available
Last source change April 2, 2026

02 / AFFECTED SOFTWARE

Affected packages

Unknown Unknown

36 explicit affected versions

Go github.com/ellanetworks/core
Go github.com/ellanetworks/core

03 / CONNECTIONS

Connected vulnerabilities

related OPENSUSE-SU-2026:21483-1

04 / EVIDENCE

Source records

Open Source Vulnerabilities GHSA-9h59-p45g-445h

## 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.

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Open Source Vulnerabilities GO-2026-4874

Ella Core has a Denial of Service via SCTP connection cleanup deadlock in github.com/ellanetworks/core

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Open Source Vulnerabilities CVE-2026-33904

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.

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05 / REFERENCES

Further evidence