# CVE-2019-12973: libopenjp2-7: In OpenJPEG 2.3.1, there is excessive iteration in the opj_t1_encode_cblksfunction of openjp2/t1.c

CVE-2019-12973 is fixed in 12 products on 1 platform, first by libopenjp2-7 2.3.0-2ubuntu0.1~esm1, released June 26, 2019. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2019-12973
- Priority: High
- CVSS: 7.8 (Low)
- EPSS: 0.0260
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 26, 2019

## Description

In OpenJPEG 2.3.1, there is excessive iteration in the opj_t1_encode_cblksfunction of openjp2/t1.c. Remote attackers could leverage thisvulnerability to cause a denial of service via a crafted bmp file. Thisissue is similar to CVE-2018-6616.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libopenjp2-7 Ubuntu 18.04.6 LTS (bionic) | 2.3.0-2ubuntu0.1~esm1 | [libopenjp2-7 2.3.0-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libopenjp2-7-2.3.0-2ubuntu0.1-esm1.md) | Jun 26, 2019 |
| 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) | 2.3.0-2ubuntu0.1~esm1 | [libopenjp2-tools 2.3.0-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libopenjp2-tools-2.3.0-2ubuntu0.1-esm1.md) | Jun 26, 2019 |
| 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) | 2.3.0-2ubuntu0.1~esm1 | [libopenjp3d-tools 2.3.0-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libopenjp3d-tools-2.3.0-2ubuntu0.1-esm1.md) | Jun 26, 2019 |
| 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) | 2.3.0-2ubuntu0.1~esm1 | [libopenjp3d7 2.3.0-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libopenjp3d7-2.3.0-2ubuntu0.1-esm1.md) | Jun 26, 2019 |
| 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) | 2.3.0-2ubuntu0.1~esm1 | [libopenjpip-dec-server 2.3.0-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libopenjpip-dec-server-2.3.0-2ubuntu0.1-esm1.md) | Jun 26, 2019 |
| 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) | 2.3.0-2ubuntu0.1~esm1 | [libopenjpip-server 2.3.0-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libopenjpip-server-2.3.0-2ubuntu0.1-esm1.md) | Jun 26, 2019 |
| 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) | 2.3.0-2ubuntu0.1~esm1 | [libopenjpip-viewer 2.3.0-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libopenjpip-viewer-2.3.0-2ubuntu0.1-esm1.md) | Jun 26, 2019 |
| 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) | 2.3.0-2ubuntu0.1~esm1 | [libopenjpip7 2.3.0-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libopenjpip7-2.3.0-2ubuntu0.1-esm1.md) | Jun 26, 2019 |
| 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 | 0:2.4.0-4.el8 | [RHSA-2021:4251](https://patchblox.com/security/data/fix/linux/rhsa-2021-4251.md) | Nov 9, 2021 |
| Linux | openjpeg2 almalinux 8 | 2.4.0-4.el8 | [ALSA-2021:4251](https://patchblox.com/security/data/fix/linux/alsa-2021-4251.md) | Nov 9, 2021 |
| Linux | openjpeg2 ol 8 | 0:2.4.0-4.el8 | [ELSA-2021-4251](https://patchblox.com/security/data/fix/linux/elsa-2021-4251.md) | Nov 16, 2021 |
| Linux | openjpeg2 rocky 8 | 0:2.4.0-4.el8 | [RLSA-2021:4251](https://patchblox.com/security/data/fix/linux/rlsa-2021-4251.md) | Nov 9, 2021 |
| Linux | openjpeg2-devel RHEL 8 | 0:2.4.0-4.el8 | [RHSA-2021:4251](https://patchblox.com/security/data/fix/linux/rhsa-2021-4251.md) | Nov 9, 2021 |
| Linux | openjpeg2-devel almalinux 8 | 2.4.0-4.el8 | [ALSA-2021:4251](https://patchblox.com/security/data/fix/linux/alsa-2021-4251.md) | Nov 9, 2021 |
| Linux | openjpeg2-devel ol 8 | 0:2.4.0-4.el8 | [ELSA-2021-4251](https://patchblox.com/security/data/fix/linux/elsa-2021-4251.md) | Nov 16, 2021 |
| Linux | openjpeg2-devel-docs RHEL 8 | 0:2.4.0-4.el8 | [RHSA-2021:4251](https://patchblox.com/security/data/fix/linux/rhsa-2021-4251.md) | Nov 9, 2021 |
| Linux | openjpeg2-devel-docs almalinux 8 | 2.4.0-4.el8 | [ALSA-2021:4251](https://patchblox.com/security/data/fix/linux/alsa-2021-4251.md) | Nov 9, 2021 |
| Linux | openjpeg2-devel-docs ol 8 | 0:2.4.0-4.el8 | [ELSA-2021-4251](https://patchblox.com/security/data/fix/linux/elsa-2021-4251.md) | Nov 16, 2021 |
| Linux | openjpeg2-tools RHEL 8 | 0:2.4.0-4.el8 | [RHSA-2021:4251](https://patchblox.com/security/data/fix/linux/rhsa-2021-4251.md) | Nov 9, 2021 |
| Linux | openjpeg2-tools almalinux 8 | 2.4.0-4.el8 | [ALSA-2021:4251](https://patchblox.com/security/data/fix/linux/alsa-2021-4251.md) | Nov 9, 2021 |
| Linux | openjpeg2-tools ol 8 | 0:2.4.0-4.el8 | [ELSA-2021-4251](https://patchblox.com/security/data/fix/linux/elsa-2021-4251.md) | Nov 16, 2021 |

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