GHSA-fw3j-wh78-34mj on Cyberus Linux 26.05

Aliases: GHSA-fw3j-wh78-34mj, CVE-2026-84964

Packages: mongoc

Status: Resolved

Advisory Information

Impact

A double free in the OpenSSL-based TLS certificate revocation checking path of the MongoDB C Driver can be reached by a TLS endpoint that the client already trusts. During the handshake, specially formed certificate data can cause the same heap object to be released twice. An unauthenticated party acting as the trusted endpoint may cause the connecting client application to terminate unexpectedly.

Patches

Fixed in 1.30.9 and 2.5.2.

Workarounds

Use OCSP stapling.

References

https://jira.mongodb.org/browse/CDRIVER-6409

Updates

2026-09-10 18:45 CEST

Metadata changes:

• Status for package mongoc: “Resolved” (3cab78fc1baa66320c23f55f1f0c8153155be888)

2026-09-10 18:44 CEST

Metadata changes:

• Status for package mongoc: “New”