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Incorrect Calculation of Buffer Size The advisory has been revoked - it doesn't affect any version of package librabbitmq-tools  (opens in a new tab)

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EPSS
0.4% (33rd percentile)

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  • Snyk IDSNYK-RHEL10-LIBRABBITMQTOOLS-20052054
  • published23 Sept 2026
  • disclosed17 Sept 2026
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Introduced: 17 Sep 2026

CVE-2026-44236  (opens in a new tab)
CWE-131  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:10.

NVD Description

Note: Versions mentioned in the description apply only to the upstream librabbitmq-tools package and not the librabbitmq-tools package as distributed by RHEL.

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.