Description
rabbitmq-c is a C-language AMQP client library for RabbitMQ. Prior to 0.16.0, a malicious AMQP server can send an undersized connection.tune.frame_max value during amqp_login(), and rabbitmq-c accepts the value in amqp_login_inner() in librabbitmq/amqp_socket.c. amqp_tune_connection() in librabbitmq/amqp_connection.c uses frame_max to reallocate the outbound buffer without enforcing AMQP_FRAME_MIN_SIZE. Immediate serialization of connection.tune-ok through amqp_frame_to_bytes() writes beyond the undersized heap allocation, causing memory corruption and likely denial of service. An on-path attacker can also trigger the flaw against plaintext AMQP traffic. Code execution is theoretically possible but was not demonstrated. This issue is fixed in version 0.16.0.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| alanxz | rabbitmq-c | < 0.16.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | librabbitmq | 0.16.0-1 | — |
| Debian 13 | librabbitmq | 0.15.0-1+deb13u1 | — |
| Debian 12 | librabbitmq | 0.11.0-1+deb12u2 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | librabbitmq | 0.15.0-1ubuntu0.26.04.1 | USN-8724-1, USN-8437-1 |
| Ubuntu 25.10 | librabbitmq | 0.15.0-1ubuntu0.25.10.1 | USN-8437-1 |
| Ubuntu 24.04 LTS | librabbitmq | 0.11.0-1ubuntu0.1 | USN-8724-1, USN-8437-1 |
| Ubuntu 22.04 LTS | librabbitmq | 0.10.0-1ubuntu2.1 | USN-8724-1, USN-8437-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | librabbitmq | 0.10.0-1ubuntu0.20.04.1~esm1 | USN-8724-1 |
| Ubuntu Pro 18.04 LTS | librabbitmq | 0.8.0-1ubuntu0.18.04.2+esm1 | USN-8724-1 |
| Ubuntu Pro 16.04 LTS | librabbitmq | 0.7.1-1ubuntu0.2+esm1 | USN-8724-1 |
| Ubuntu Pro 14.04 LTS | librabbitmq | 0.4.1-1ubuntu0.1~esm2 | USN-8724-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | librabbitmq +2 | 0.14.0-3.el10_2.1 | RHSA-2026:84795 |
| RHEL 9 | librabbitmq +2 | 0.11.0-7.el9_8.1 | RHSA-2026:98467, RHSA-2026:82094 |
| RHEL 8 | librabbitmq +2 | 0.9.0-6.el8_10 | RHSA-2026:75582 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | librabbitmq +2 | 0.14.0-3.el10_2.1 | ALSA-2026:84795 |
| AlmaLinux 9 | librabbitmq +2 | 0.11.0-7.el9_8.1 | ALSA-2026:82094 |
| AlmaLinux 8 | librabbitmq-devel | 0.9.0-6.el8_10 | ALSA-2026:75582 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | librabbitmq | 0.14.0-3.el10_2.1 | RLSA-2026:84795 |
| Rocky Linux 9 | librabbitmq | 0.11.0-7.el9_8.1 | RLSA-2026:98467, RLSA-2026:82094 |
| Rocky Linux 8 | librabbitmq | 0.9.0-6.el8_10 | RLSA-2026:75582 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | librabbitmq | No fix yet | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | librabbitmq +2 | 0.14.0-3.el10_2.1 | ELSA-2026-84795 |
| Oracle Linux 9 | librabbitmq +2 | 0.11.0-7.el9_8.1 | ELSA-2026-82094 |
| Oracle Linux 8 | librabbitmq +2 | 0.9.0-6.el8_10 | ELSA-2026-75582 |
Advisories 17
- RHSA-2026:98467 Red Hat Security Advisory: librabbitmq security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- USN-8724-1 librabbitmq vulnerabilities Ubuntu Security Notices (USN) · Nov 12, 2026
- RLSA-2026:98467 Important: librabbitmq security update Rocky Linux Security Advisories · Nov 12, 2026
- WID-SEC-2026-3736 RabbitMQ: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Nov 11, 2026
- ALSA-2026:82094 Important: librabbitmq security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:84795 Important: librabbitmq security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:75582 Important: librabbitmq security update AlmaLinux Security Advisories · Oct 29, 2026
- RLSA-2026:84795 Important: librabbitmq security update Rocky Linux Security Advisories · Oct 20, 2026
- RHSA-2026:84795 Red Hat Security Advisory: librabbitmq security update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:82094 Red Hat Security Advisory: librabbitmq security update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:75582 Red Hat Security Advisory: librabbitmq security update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- ELSA-2026-84795 Important: librabbitmq security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Oct 19, 2026
- RLSA-2026:82094 Important: librabbitmq security update Rocky Linux Security Advisories · Oct 14, 2026
- ELSA-2026-82094 Important: librabbitmq security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Oct 13, 2026
- RLSA-2026:75582 Important: librabbitmq security update Rocky Linux Security Advisories · Oct 6, 2026
- ELSA-2026-75582 Important: librabbitmq security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Oct 6, 2026
- USN-8437-1 librabbitmq vulnerabilities Ubuntu Security Notices (USN) · Sep 21, 2026