# CVE-2026-16439: java: In Eclipse OpenJ9 versions up to 0.60, using -Xtrace to trace method arguments can lead to buffer underflow.

CVE-2026-16439 is fixed in 10 products on 1 platform, first by RHSA-2026:52948, released July 23, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-16439
- Priority: Routine
- CVSS: 6.4 (moderate)
- EPSS: 0.0043
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 21, 2026

## Description

In Eclipse OpenJ9 versions up to 0.60, using -Xtrace to trace method arguments can lead to buffer underflow.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | java RHEL 10 | 21-ibm-semeru-certified-jdk-1:21.0.12.0.8-1.el10_0 | [RHSA-2026:52948](https://patchblox.com/security/data/fix/linux/rhsa-2026-52948.md) | Jul 23, 2026 |
| Linux | java-1.8.0-ibm RHEL 8 | 1:1.8.0.8.70-1.el8_10 | [RHSA-2026:52949](https://patchblox.com/security/data/fix/linux/rhsa-2026-52949.md) | Aug 11, 2026 |
| Linux | java-1.8.0-ibm-demo RHEL 8 | 1:1.8.0.8.70-1.el8_10 | [RHSA-2026:52949](https://patchblox.com/security/data/fix/linux/rhsa-2026-52949.md) | Aug 11, 2026 |
| Linux | java-1.8.0-ibm-devel RHEL 8 | 1:1.8.0.8.70-1.el8_10 | [RHSA-2026:52949](https://patchblox.com/security/data/fix/linux/rhsa-2026-52949.md) | Aug 11, 2026 |
| Linux | java-1.8.0-ibm-headless RHEL 8 | 1:1.8.0.8.70-1.el8_10 | [RHSA-2026:52949](https://patchblox.com/security/data/fix/linux/rhsa-2026-52949.md) | Aug 11, 2026 |
| Linux | java-1.8.0-ibm-jdbc RHEL 8 | 1:1.8.0.8.70-1.el8_10 | [RHSA-2026:52949](https://patchblox.com/security/data/fix/linux/rhsa-2026-52949.md) | Aug 11, 2026 |
| Linux | java-1.8.0-ibm-plugin RHEL 8 | 1:1.8.0.8.70-1.el8_10 | [RHSA-2026:52949](https://patchblox.com/security/data/fix/linux/rhsa-2026-52949.md) | Aug 11, 2026 |
| Linux | java-1.8.0-ibm-src RHEL 8 | 1:1.8.0.8.70-1.el8_10 | [RHSA-2026:52949](https://patchblox.com/security/data/fix/linux/rhsa-2026-52949.md) | Aug 11, 2026 |
| Linux | java-1.8.0-ibm-webstart RHEL 8 | 1:1.8.0.8.70-1.el8_10 | [RHSA-2026:52949](https://patchblox.com/security/data/fix/linux/rhsa-2026-52949.md) | Aug 11, 2026 |
| Linux | java-1_8_0-ibm sles 15.6 | 1.8.0_sr8.70-150000.3.119.1 | [SUSE-SU-2026:3615-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3615-1.md) | Aug 13, 2026 |
| Linux | java-1_8_0-ibm sles 15.7 | 1.8.0_sr8.70-150000.3.119.1 | [SUSE-SU-2026:3615-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3615-1.md) | Aug 13, 2026 |

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Data as of 2026-11-11T13:47:35Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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