CVE-2025-24294 Affecting rubygem-psych package, versions <0:5.1.2-5.module+el8.10.0+90720+35d8666a


Severity

Recommended
medium

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.05% (15th percentile)

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  • Snyk IDSNYK-ORACLE8-RUBYGEMPSYCH-14411026
  • published13 Dec 2025
  • disclosed12 Jul 2025

Introduced: 12 Jul 2025

CVE-2025-24294  (opens in a new tab)

How to fix?

Upgrade Oracle:8 rubygem-psych to version 0:5.1.2-5.module+el8.10.0+90720+35d8666a or higher.
This issue was patched in ELSA-2025-23062.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rubygem-psych package and not the rubygem-psych package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

The attack vector is a potential Denial of Service (DoS). The vulnerability is caused by an insufficient check on the length of a decompressed domain name within a DNS packet.

An attacker can craft a malicious DNS packet containing a highly compressed domain name. When the resolv library parses such a packet, the name decompression process consumes a large amount of CPU resources, as the library does not limit the resulting length of the name.

This resource consumption can cause the application thread to become unresponsive, resulting in a Denial of Service condition.

CVSS Base Scores

version 3.1