# ELSA-2026-0928: Security update for 23 packages

ELSA-2026-0928, released January 23, 2026, fixes 5 CVEs across 23 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/elsa-2026-0928
- Platform: Linux
- Released: Jan 23, 2026
- Priority: High (Closes CVE-2026-21945, high severity)
- CVEs: 5, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://linux.oracle.com/errata/ELSA-2026-0928.html

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [java-21-openjdk](https://patchblox.com/security/data/product/linux/java-21-openjdk.md) | ol 10 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk](https://patchblox.com/security/data/product/linux/java-21-openjdk.md) | ol 8 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk](https://patchblox.com/security/data/product/linux/java-21-openjdk.md) | ol 9 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-demo](https://patchblox.com/security/data/product/linux/java-21-openjdk-demo.md) | ol 10 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-demo](https://patchblox.com/security/data/product/linux/java-21-openjdk-demo.md) | ol 8 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-demo](https://patchblox.com/security/data/product/linux/java-21-openjdk-demo.md) | ol 9 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-demo-fastdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-demo-fastdebug.md) | ol 10 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-demo-fastdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-demo-fastdebug.md) | ol 8 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-demo-fastdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-demo-fastdebug.md) | ol 9 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-demo-slowdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-demo-slowdebug.md) | ol 10 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-demo-slowdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-demo-slowdebug.md) | ol 8 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-demo-slowdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-demo-slowdebug.md) | ol 9 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-devel](https://patchblox.com/security/data/product/linux/java-21-openjdk-devel.md) | ol 10 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-devel](https://patchblox.com/security/data/product/linux/java-21-openjdk-devel.md) | ol 8 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-devel](https://patchblox.com/security/data/product/linux/java-21-openjdk-devel.md) | ol 9 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-devel-fastdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-devel-fastdebug.md) | ol 10 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-devel-fastdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-devel-fastdebug.md) | ol 8 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-devel-fastdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-devel-fastdebug.md) | ol 9 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-devel-slowdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-devel-slowdebug.md) | ol 10 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-devel-slowdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-devel-slowdebug.md) | ol 8 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-devel-slowdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-devel-slowdebug.md) | ol 9 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-fastdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-fastdebug.md) | ol 10 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-fastdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-fastdebug.md) | ol 8 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-fastdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-fastdebug.md) | ol 9 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-headless](https://patchblox.com/security/data/product/linux/java-21-openjdk-headless.md) | ol 10 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-headless](https://patchblox.com/security/data/product/linux/java-21-openjdk-headless.md) | ol 8 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-headless](https://patchblox.com/security/data/product/linux/java-21-openjdk-headless.md) | ol 9 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-headless-fastdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-headless-fastdebug.md) | ol 10 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-headless-fastdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-headless-fastdebug.md) | ol 8 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-headless-fastdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-headless-fastdebug.md) | ol 9 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-headless-slowdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-headless-slowdebug.md) | ol 10 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-headless-slowdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-headless-slowdebug.md) | ol 8 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-headless-slowdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-headless-slowdebug.md) | ol 9 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-javadoc](https://patchblox.com/security/data/product/linux/java-21-openjdk-javadoc.md) | ol 10 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-javadoc](https://patchblox.com/security/data/product/linux/java-21-openjdk-javadoc.md) | ol 8 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-javadoc](https://patchblox.com/security/data/product/linux/java-21-openjdk-javadoc.md) | ol 9 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-javadoc-zip](https://patchblox.com/security/data/product/linux/java-21-openjdk-javadoc-zip.md) | ol 10 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-javadoc-zip](https://patchblox.com/security/data/product/linux/java-21-openjdk-javadoc-zip.md) | ol 8 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-javadoc-zip](https://patchblox.com/security/data/product/linux/java-21-openjdk-javadoc-zip.md) | ol 9 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-jmods](https://patchblox.com/security/data/product/linux/java-21-openjdk-jmods.md) | ol 10 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-jmods](https://patchblox.com/security/data/product/linux/java-21-openjdk-jmods.md) | ol 8 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-jmods](https://patchblox.com/security/data/product/linux/java-21-openjdk-jmods.md) | ol 9 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-jmods-fastdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-jmods-fastdebug.md) | ol 10 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-jmods-fastdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-jmods-fastdebug.md) | ol 8 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-jmods-fastdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-jmods-fastdebug.md) | ol 9 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-jmods-slowdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-jmods-slowdebug.md) | ol 10 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-jmods-slowdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-jmods-slowdebug.md) | ol 8 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-jmods-slowdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-jmods-slowdebug.md) | ol 9 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-slowdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-slowdebug.md) | ol 10 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-slowdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-slowdebug.md) | ol 8 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-slowdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-slowdebug.md) | ol 9 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-src](https://patchblox.com/security/data/product/linux/java-21-openjdk-src.md) | ol 10 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-src](https://patchblox.com/security/data/product/linux/java-21-openjdk-src.md) | ol 8 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-src](https://patchblox.com/security/data/product/linux/java-21-openjdk-src.md) | ol 9 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-src-fastdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-src-fastdebug.md) | ol 10 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-src-fastdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-src-fastdebug.md) | ol 8 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-src-fastdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-src-fastdebug.md) | ol 9 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-src-slowdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-src-slowdebug.md) | ol 10 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-src-slowdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-src-slowdebug.md) | ol 8 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-src-slowdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-src-slowdebug.md) | ol 9 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-static-libs](https://patchblox.com/security/data/product/linux/java-21-openjdk-static-libs.md) | ol 10 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-static-libs](https://patchblox.com/security/data/product/linux/java-21-openjdk-static-libs.md) | ol 8 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-static-libs](https://patchblox.com/security/data/product/linux/java-21-openjdk-static-libs.md) | ol 9 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-static-libs-fastdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-static-libs-fastdebug.md) | ol 10 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-static-libs-fastdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-static-libs-fastdebug.md) | ol 8 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-static-libs-fastdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-static-libs-fastdebug.md) | ol 9 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-static-libs-slowdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-static-libs-slowdebug.md) | ol 10 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-static-libs-slowdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-static-libs-slowdebug.md) | ol 8 | 1:21.0.10.0.7-1.0.1.el10 |
| [java-21-openjdk-static-libs-slowdebug](https://patchblox.com/security/data/product/linux/java-21-openjdk-static-libs-slowdebug.md) | ol 9 | 1:21.0.10.0.7-1.0.1.el10 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-21945](https://patchblox.com/security/data/cve/CVE-2026-21945.md) | High | Java(TM) SE Development Kit 21 and 1 other: Uncontrolled Resource Consumption | 7.5 | 0.0099 |  |
| [CVE-2025-64720](https://patchblox.com/security/data/cve/CVE-2025-64720.md) | High | LIBPNG is vulnerable to a buffer overflow in `png_image_read_composite` via incorrect palette premultiplication | 7.5 | 0.0045 |  |
| [CVE-2026-21933](https://patchblox.com/security/data/cve/CVE-2026-21933.md) | High | Java(TM) SE Development Kit 21 and 1 other: Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product… | 7.5 | 0.0030 |  |
| [CVE-2025-65018](https://patchblox.com/security/data/cve/CVE-2025-65018.md) | High | LIBPNG is vulnerable to a heap buffer overflow in `png_combine_row` triggered via `png_image_finish_read` | 7.5 | 0.0028 |  |
| [CVE-2026-21925](https://patchblox.com/security/data/cve/CVE-2026-21925.md) | High | Java(TM) SE Development Kit 21 and 1 other: Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product… | 7.5 | 0.0025 |  |

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