CVE-2024-1023

Io.vertx/vertx-core: memory leak due to the use of netty fastthreadlocal data structures in vertx

MEDIUM
6.5
CVSS Score
Published: March 27, 2024 at 07:51 AM UTC
Updated: September 23, 2026 at 04:17 AM UTC
9 products affected across 1 vendorBuild of KeycloakData GridBuild of Apache Camel for Quarkus

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Severity
MEDIUM6.5
Exploit prediction
EPSS 2%
SSVC
PoC

Description

A vulnerability in the Eclipse Vert.x toolkit results in a memory leak due to using Netty FastThreadLocal data structures. Specifically, when the Vert.x HTTP client establishes connections to different hosts, triggering the memory leak. The leak can be accelerated with intimate runtime knowledge, allowing an attacker to exploit this vulnerability. For instance, a server accepting arbitrary internet addresses could serve as an attack vector by connecting to these addresses, thereby accelerating the memory leak.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

References (12)

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMredhat
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-401

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