# CVE-2020-6851: libopenjpip-viewer: OpenJPEG through 2.3.1 has a heap-based buffer overflow inopj_t1_clbl_decode_processor in openjp2/t1.c because of lac...

CVE-2020-6851 is fixed in 17 products on 1 platform, first by libopenjp2-7 2.3.1-1ubuntu4, released January 28, 2020. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2020-6851
- Priority: High
- CVSS: 8.1 (Medium)
- EPSS: 0.0529
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jan 12, 2020

## Description

OpenJPEG through 2.3.1 has a heap-based buffer overflow inopj_t1_clbl_decode_processor in openjp2/t1.c because of lack ofopj_j2k_update_image_dimensions validation.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | ghostscript Ubuntu 18.04.6 LTS (bionic) | 9.26~dfsg+0-0ubuntu0.18.04.14 | [ghostscript 9.26~dfsg+0-0ubuntu0.18.04.14](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-ghostscript-9.26-dfsg-0-0ubuntu0.18.04.14.md) | Jan 5, 2021 |
| Linux | ghostscript-x Ubuntu 18.04.6 LTS (bionic) | 9.26~dfsg+0-0ubuntu0.18.04.14 | [ghostscript-x 9.26~dfsg+0-0ubuntu0.18.04.14](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-ghostscript-x-9.26-dfsg-0-0ubuntu0.18.04.14.md) | Jan 5, 2021 |
| Linux | libgs9 Ubuntu 18.04.6 LTS (bionic) | 9.26~dfsg+0-0ubuntu0.18.04.14 | [libgs9 9.26~dfsg+0-0ubuntu0.18.04.14](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libgs9-9.26-dfsg-0-0ubuntu0.18.04.14.md) | Jan 5, 2021 |
| Linux | libgs9-common Ubuntu 18.04.6 LTS (bionic) | 9.26~dfsg+0-0ubuntu0.18.04.14 | [libgs9-common 9.26~dfsg+0-0ubuntu0.18.04.14](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libgs9-common-9.26-dfsg-0-0ubuntu0.18.04.14.md) | Jan 5, 2021 |
| Linux | libheif opensuse-leap 16.0 | 1.23.5-160000.1.1 | [OPENSUSE-SU-2026:22052-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22052-1.md) | Nov 7, 2026 |
| Linux | libheif sles 15.7 | 1.23.5-150700.3.24.1 | [SUSE-SU-2026:4378-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4378-1.md) | Sep 28, 2026 |
| Linux | libheif sles 16.0 | 1.23.5-160000.1.1 | [SUSE-SU-2026:24205-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-24205-1.md) | Nov 7, 2026 |
| Linux | libopenjp2-7 Ubuntu 18.04.6 LTS (bionic) | 2.3.0-2+deb10u2build0.18.04.1 | [libopenjp2-7 2.3.0-2+deb10u2build0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libopenjp2-7-2.3.0-2-deb10u2build0.18.04.1.md) | Jan 5, 2021 |
| Linux | libopenjp2-7 Ubuntu 20.04 LTS (focal) | 2.3.1-1ubuntu4 | [libopenjp2-7 2.3.1-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libopenjp2-7-2.3.1-1ubuntu4.md) | Jan 28, 2020 |
| Linux | libopenjp2-7 Ubuntu 24.10 (oracular) | 2.3.1-1ubuntu4 | [libopenjp2-7 2.3.1-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libopenjp2-7-2.3.1-1ubuntu4.md) | Jan 16, 2026 |
| Linux | libopenjp2-7 Ubuntu 25.04 (plucky) | 2.3.1-1ubuntu4 | [libopenjp2-7 2.3.1-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libopenjp2-7-2.3.1-1ubuntu4.md) | Jan 16, 2026 |
| Linux | libopenjp2-tools Ubuntu 18.04.6 LTS (bionic) | 2.3.0-2+deb10u2build0.18.04.1 | [libopenjp2-tools 2.3.0-2+deb10u2build0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libopenjp2-tools-2.3.0-2-deb10u2build0.18.04.1.md) | Jan 5, 2021 |
| Linux | libopenjp2-tools Ubuntu 20.04 LTS (focal) | 2.3.1-1ubuntu4 | [libopenjp2-tools 2.3.1-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libopenjp2-tools-2.3.1-1ubuntu4.md) | Jan 28, 2020 |
| Linux | libopenjp2-tools Ubuntu 24.10 (oracular) | 2.3.1-1ubuntu4 | [libopenjp2-tools 2.3.1-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libopenjp2-tools-2.3.1-1ubuntu4.md) | Jan 16, 2026 |
| Linux | libopenjp2-tools Ubuntu 25.04 (plucky) | 2.3.1-1ubuntu4 | [libopenjp2-tools 2.3.1-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libopenjp2-tools-2.3.1-1ubuntu4.md) | Jan 16, 2026 |
| Linux | libopenjp3d-tools Ubuntu 18.04.6 LTS (bionic) | 2.3.0-2+deb10u2build0.18.04.1 | [libopenjp3d-tools 2.3.0-2+deb10u2build0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libopenjp3d-tools-2.3.0-2-deb10u2build0.18.04.1.md) | Jan 5, 2021 |
| Linux | libopenjp3d-tools Ubuntu 20.04 LTS (focal) | 2.3.1-1ubuntu4 | [libopenjp3d-tools 2.3.1-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libopenjp3d-tools-2.3.1-1ubuntu4.md) | Jan 28, 2020 |
| Linux | libopenjp3d7 Ubuntu 18.04.6 LTS (bionic) | 2.3.0-2+deb10u2build0.18.04.1 | [libopenjp3d7 2.3.0-2+deb10u2build0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libopenjp3d7-2.3.0-2-deb10u2build0.18.04.1.md) | Jan 5, 2021 |
| Linux | libopenjp3d7 Ubuntu 20.04 LTS (focal) | 2.3.1-1ubuntu4 | [libopenjp3d7 2.3.1-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libopenjp3d7-2.3.1-1ubuntu4.md) | Jan 28, 2020 |
| Linux | libopenjpip-dec-server Ubuntu 18.04.6 LTS (bionic) | 2.3.0-2+deb10u2build0.18.04.1 | [libopenjpip-dec-server 2.3.0-2+deb10u2build0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libopenjpip-dec-server-2.3.0-2-deb10u2build0.18.04.1.md) | Jan 5, 2021 |
| Linux | libopenjpip-dec-server Ubuntu 20.04 LTS (focal) | 2.3.1-1ubuntu4 | [libopenjpip-dec-server 2.3.1-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libopenjpip-dec-server-2.3.1-1ubuntu4.md) | Jan 28, 2020 |
| Linux | libopenjpip-dec-server Ubuntu 24.10 (oracular) | 2.3.1-1ubuntu4 | [libopenjpip-dec-server 2.3.1-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libopenjpip-dec-server-2.3.1-1ubuntu4.md) | Jan 16, 2026 |
| Linux | libopenjpip-dec-server Ubuntu 25.04 (plucky) | 2.3.1-1ubuntu4 | [libopenjpip-dec-server 2.3.1-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libopenjpip-dec-server-2.3.1-1ubuntu4.md) | Jan 16, 2026 |
| Linux | libopenjpip-server Ubuntu 18.04.6 LTS (bionic) | 2.3.0-2+deb10u2build0.18.04.1 | [libopenjpip-server 2.3.0-2+deb10u2build0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libopenjpip-server-2.3.0-2-deb10u2build0.18.04.1.md) | Jan 5, 2021 |
| Linux | libopenjpip-server Ubuntu 20.04 LTS (focal) | 2.3.1-1ubuntu4 | [libopenjpip-server 2.3.1-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libopenjpip-server-2.3.1-1ubuntu4.md) | Jan 28, 2020 |
| Linux | libopenjpip-server Ubuntu 24.10 (oracular) | 2.3.1-1ubuntu4 | [libopenjpip-server 2.3.1-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libopenjpip-server-2.3.1-1ubuntu4.md) | Jan 16, 2026 |
| Linux | libopenjpip-server Ubuntu 25.04 (plucky) | 2.3.1-1ubuntu4 | [libopenjpip-server 2.3.1-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libopenjpip-server-2.3.1-1ubuntu4.md) | Jan 16, 2026 |
| Linux | libopenjpip-viewer Ubuntu 18.04.6 LTS (bionic) | 2.3.0-2+deb10u2build0.18.04.1 | [libopenjpip-viewer 2.3.0-2+deb10u2build0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libopenjpip-viewer-2.3.0-2-deb10u2build0.18.04.1.md) | Jan 5, 2021 |
| Linux | libopenjpip-viewer Ubuntu 20.04 LTS (focal) | 2.3.1-1ubuntu4 | [libopenjpip-viewer 2.3.1-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libopenjpip-viewer-2.3.1-1ubuntu4.md) | Jan 28, 2020 |
| Linux | libopenjpip-viewer Ubuntu 24.10 (oracular) | 2.3.1-1ubuntu4 | [libopenjpip-viewer 2.3.1-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libopenjpip-viewer-2.3.1-1ubuntu4.md) | Jan 16, 2026 |
| Linux | libopenjpip-viewer Ubuntu 25.04 (plucky) | 2.3.1-1ubuntu4 | [libopenjpip-viewer 2.3.1-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libopenjpip-viewer-2.3.1-1ubuntu4.md) | Jan 16, 2026 |
| Linux | libopenjpip7 Ubuntu 18.04.6 LTS (bionic) | 2.3.0-2+deb10u2build0.18.04.1 | [libopenjpip7 2.3.0-2+deb10u2build0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libopenjpip7-2.3.0-2-deb10u2build0.18.04.1.md) | Jan 5, 2021 |
| Linux | libopenjpip7 Ubuntu 20.04 LTS (focal) | 2.3.1-1ubuntu4 | [libopenjpip7 2.3.1-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libopenjpip7-2.3.1-1ubuntu4.md) | Jan 28, 2020 |
| Linux | libopenjpip7 Ubuntu 24.10 (oracular) | 2.3.1-1ubuntu4 | [libopenjpip7 2.3.1-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libopenjpip7-2.3.1-1ubuntu4.md) | Jan 16, 2026 |
| Linux | libopenjpip7 Ubuntu 25.04 (plucky) | 2.3.1-1ubuntu4 | [libopenjpip7 2.3.1-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libopenjpip7-2.3.1-1ubuntu4.md) | Jan 16, 2026 |
| Linux | openjpeg2 RHEL 8 | 0:2.3.1-2.el8_1 | [RHSA-2020:0274](https://patchblox.com/security/data/fix/linux/rhsa-2020-0274.md) | Jan 29, 2020 |
| Linux | openjpeg2 ol 8 | 0:2.3.1-2.el8_1 | [ELSA-2020-0274](https://patchblox.com/security/data/fix/linux/elsa-2020-0274.md) | Jan 29, 2020 |
| Linux | openjpeg2-devel RHEL 8 | 0:2.3.1-2.el8_1 | [RHSA-2020:0274](https://patchblox.com/security/data/fix/linux/rhsa-2020-0274.md) | Jan 29, 2020 |
| Linux | openjpeg2-devel ol 8 | 0:2.3.1-2.el8_1 | [ELSA-2020-0274](https://patchblox.com/security/data/fix/linux/elsa-2020-0274.md) | Jan 29, 2020 |
| Linux | openjpeg2-devel-docs RHEL 8 | 0:2.3.1-2.el8_1 | [RHSA-2020:0274](https://patchblox.com/security/data/fix/linux/rhsa-2020-0274.md) | Jan 29, 2020 |
| Linux | openjpeg2-devel-docs ol 8 | 0:2.3.1-2.el8_1 | [ELSA-2020-0274](https://patchblox.com/security/data/fix/linux/elsa-2020-0274.md) | Jan 29, 2020 |
| Linux | openjpeg2-tools RHEL 8 | 0:2.3.1-2.el8_1 | [RHSA-2020:0274](https://patchblox.com/security/data/fix/linux/rhsa-2020-0274.md) | Jan 29, 2020 |
| Linux | openjpeg2-tools ol 8 | 0:2.3.1-2.el8_1 | [ELSA-2020-0274](https://patchblox.com/security/data/fix/linux/elsa-2020-0274.md) | Jan 29, 2020 |

---

Data as of 2026-11-08T06:59:42Z 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

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.