Public Date:
1685717: CVE-2018-12549 IBM JDK: missing null check when accelerating Unsafe calls

The MITRE CVE dictionary describes this issue as:

In Eclipse OpenJ9 version 0.11.0, the OpenJ9 JIT compiler may incorrectly omit a null check on the receiver object of an Unsafe call when accelerating it.

Find out more about CVE-2018-12549 from the MITRE CVE dictionary dictionary and NIST NVD.


This issue affects the versions of the java-1.8.0-ibm package as shipped with Red Hat Satellite 5. However, OpenJ9 is loaded only by taskomatic and Tomcat. These 2 processes are listening on the loopback interface only. This flaw is not known to be remotely exploitable under any supported scenario in Satellite 5.

CVSS v3 metrics

CVSS3 Base Score 8.8
CVSS3 Base Metrics CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity Impact High
Availability Impact High

Red Hat Security Errata

Platform Errata Release Date
Red Hat Satellite 5.8 (RHEL v.6) (java-1.8.0-ibm) RHSA-2019:0640 2019-03-25
Red Hat Enterprise Linux Supplementary (v. 7) (java-1.8.0-ibm) RHSA-2019:0472 2019-03-08
Red Hat Enterprise Linux 8 (java-1.8.0-ibm) RHSA-2019:1238 2019-05-16
Red Hat Enterprise Linux Supplementary (v. 6) (java-1.8.0-ibm) RHSA-2019:0469 2019-03-06

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 7 java-1.7.1-ibm Not affected
Red Hat Enterprise Linux 6 java-1.7.1-ibm Not affected
Unless explicitly stated as not affected, all previous versions of packages in any minor update stream of a product listed here should be assumed vulnerable, although may not have been subject to full analysis.
Last Modified

CVE description copyright © 2017, The MITRE Corporation