-------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2026-e673311164 2026-04-25 00:52:53.710799+00:00 --------------------------------------------------------------------------------
Name : coturn Product : Fedora 42 Version : 4.10.0 Release : 1.fc42 URL : https://github.com/coturn/coturn/ Summary : TURN/STUN & ICE Server Description : The Coturn TURN Server is a VoIP media traffic NAT traversal server and gateway. It can be used as a general-purpose network traffic TURN server/gateway, too.
This implementation also includes some extra features. Supported RFCs:
TURN specs: - RFC 5766 - base TURN specs - RFC 6062 - TCP relaying TURN extension - RFC 6156 - IPv6 extension for TURN - Experimental DTLS support as client protocol.
STUN specs: - RFC 3489 - "classic" STUN - RFC 5389 - base "new" STUN specs - RFC 5769 - test vectors for STUN protocol testing - RFC 5780 - NAT behavior discovery support
The implementation fully supports the following client-to-TURN-server protocols: - UDP (per RFC 5766) - TCP (per RFC 5766 and RFC 6062) - TLS (per RFC 5766 and RFC 6062); TLS1.0/TLS1.1/TLS1.2 - DTLS (experimental non-standard feature)
Supported relay protocols: - UDP (per RFC 5766) - TCP (per RFC 6062)
Supported user databases (for user repository, with passwords or keys, if authentication is required): - SQLite - MySQL - PostgreSQL - Redis
Redis can also be used for status and statistics storage and notification.
Supported TURN authentication mechanisms: - long-term - TURN REST API (a modification of the long-term mechanism, for time-limited secret-based authentication, for WebRTC applications)
The load balancing can be implemented with the following tools (either one or a combination of them): - network load-balancer server - DNS-based load balancing - built-in ALTERNATE-SERVER mechanism.
-------------------------------------------------------------------------------- Update Information:
Coturn 4.10.0 Performance Add Linux-only recvmmsg client receive path for DTLS/UDP listener Skip response buffer allocation for STUN indications Remove mutex from per-thread super_memory allocator Eliminate mutex and reduce copies on auth message dispatch Replace mutex_bps with lock-free atomics for bandwidth tracking Remove unused mutex from ur_map structure WebRTC Auth optimization path Improve worst case scenario - avoid memory allocation Memory issues Fix null pointer dereferences in post_parse() Fix stack buffer overflow in OAuth token decoding Fix uint16_t truncation overflow in stun_get_message_len_str() Initialize variables before use Security CVE-2026-40613 Misaligned Memory Access STUN Attribute Parser General Improvements Disable reason string in response messages to reduce amplification factor Keep only NEV_UDP_SOCKET_PER_THREAD network engine Replace perror with logging Extend seed corpus and add more fuzzing scenarios Update config and Readme files about deprecated TLSv1/1.1 Restore RFC 3489 (old STUN) backward compatibility broken since 4.7.0 Change port identifiers to use uint16_t Fixes: run_tests.sh and no db Improve PostgreSQL.md clarity Add session usage reporting callback to TURN database driver CLI interface is disabled by default -------------------------------------------------------------------------------- ChangeLog:
* Fri Apr 17 2026 Robert Scheck robert@fedoraproject.org - 4.10.0-1 - Upgrade to 4.10.0 (#2458094) -------------------------------------------------------------------------------- References:
[ 1 ] Bug #2460213 - CVE-2026-40613 coturn: coturn: Denial of Service due to misaligned memory reads from crafted STUN messages https://bugzilla.redhat.com/show_bug.cgi?id=2460213 --------------------------------------------------------------------------------
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-e673311164' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label
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