# CVE-2019-2126: godot3: In ParseContentEncodingEntry of mkvparser.cc, there is a possible doublefree due to a missing reset of a freed pointer

CVE-2019-2126 is fixed in 7 products on 1 platform, first by godot3 3.5.2-stable-2ubuntu0.24.04.1~esm1, released August 20, 2019. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2019-2126
- Priority: High
- CVSS: 8.8 (Low)
- EPSS: 0.0551
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 20, 2019

## Description

In ParseContentEncodingEntry of mkvparser.cc, there is a possible doublefree due to a missing reset of a freed pointer. This could lead to remotecode execution with no additional execution privileges needed. Userinteraction is needed for exploitation. Product: Android. Versions:Android-7.0 Android-7.1.1 Android-7.1.2 Android-8.0 Android-8.1 Android-9.Android ID: A-127702368.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | godot3 Ubuntu 20.04 LTS (focal) | 3.2-stable-2ubuntu0.1~esm1 | [godot3 3.2-stable-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-godot3-3.2-stable-2ubuntu0.1-esm1.md) | Feb 8, 2021 |
| Linux | godot3 Ubuntu 22.04.1 LTS (jammy) | 3.2.3-stable-1ubuntu0.1~esm1 | [godot3 3.2.3-stable-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-godot3-3.2.3-stable-1ubuntu0.1-esm1.md) | Feb 8, 2021 |
| Linux | godot3 Ubuntu 24.04.5 LTS (noble) | 3.5.2-stable-2ubuntu0.24.04.1~esm1 | [godot3 3.5.2-stable-2ubuntu0.24.04.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-godot3-3.5.2-stable-2ubuntu0.24.04.1-esm1.md) | Aug 20, 2019 |
| Linux | godot3 Ubuntu 24.10 (oracular) | 3.5.2-stable-2ubuntu0.24.10.1 | [godot3 3.5.2-stable-2ubuntu0.24.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-godot3-3.5.2-stable-2ubuntu0.24.10.1.md) | Jan 16, 2026 |
| Linux | godot3 Ubuntu 25.04 (plucky) | 3.6+ds-2ubuntu0.1 | [godot3 3.6+ds-2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-godot3-3.6-ds-2ubuntu0.1.md) | Jan 16, 2026 |
| Linux | godot3-runner Ubuntu 20.04 LTS (focal) | 3.2-stable-2ubuntu0.1~esm1 | [godot3-runner 3.2-stable-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-godot3-runner-3.2-stable-2ubuntu0.1-esm1.md) | Feb 8, 2021 |
| Linux | godot3-runner Ubuntu 22.04.1 LTS (jammy) | 3.2.3-stable-1ubuntu0.1~esm1 | [godot3-runner 3.2.3-stable-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-godot3-runner-3.2.3-stable-1ubuntu0.1-esm1.md) | Feb 8, 2021 |
| Linux | godot3-runner Ubuntu 24.04.5 LTS (noble) | 3.5.2-stable-2ubuntu0.24.04.1~esm1 | [godot3-runner 3.5.2-stable-2ubuntu0.24.04.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-godot3-runner-3.5.2-stable-2ubuntu0.24.04.1-esm1.md) | Aug 20, 2019 |
| Linux | godot3-runner Ubuntu 24.10 (oracular) | 3.5.2-stable-2ubuntu0.24.10.1 | [godot3-runner 3.5.2-stable-2ubuntu0.24.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-godot3-runner-3.5.2-stable-2ubuntu0.24.10.1.md) | Jan 16, 2026 |
| Linux | godot3-runner Ubuntu 25.04 (plucky) | 3.6+ds-2ubuntu0.1 | [godot3-runner 3.6+ds-2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-godot3-runner-3.6-ds-2ubuntu0.1.md) | Jan 16, 2026 |
| Linux | godot3-server Ubuntu 20.04 LTS (focal) | 3.2-stable-2ubuntu0.1~esm1 | [godot3-server 3.2-stable-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-godot3-server-3.2-stable-2ubuntu0.1-esm1.md) | Feb 8, 2021 |
| Linux | godot3-server Ubuntu 22.04.1 LTS (jammy) | 3.2.3-stable-1ubuntu0.1~esm1 | [godot3-server 3.2.3-stable-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-godot3-server-3.2.3-stable-1ubuntu0.1-esm1.md) | Feb 8, 2021 |
| Linux | godot3-server Ubuntu 24.04.5 LTS (noble) | 3.5.2-stable-2ubuntu0.24.04.1~esm1 | [godot3-server 3.5.2-stable-2ubuntu0.24.04.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-godot3-server-3.5.2-stable-2ubuntu0.24.04.1-esm1.md) | Aug 20, 2019 |
| Linux | godot3-server Ubuntu 24.10 (oracular) | 3.5.2-stable-2ubuntu0.24.10.1 | [godot3-server 3.5.2-stable-2ubuntu0.24.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-godot3-server-3.5.2-stable-2ubuntu0.24.10.1.md) | Jan 16, 2026 |
| Linux | godot3-server Ubuntu 25.04 (plucky) | 3.6+ds-2ubuntu0.1 | [godot3-server 3.6+ds-2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-godot3-server-3.6-ds-2ubuntu0.1.md) | Jan 16, 2026 |
| Linux | libvpx RHEL 8 | 0:1.7.0-8.el8 | [RHSA-2020:4629](https://patchblox.com/security/data/fix/linux/rhsa-2020-4629.md) | Nov 4, 2020 |
| Linux | libvpx ol 8 | 0:1.7.0-8.el8 | [ELSA-2020-4629](https://patchblox.com/security/data/fix/linux/elsa-2020-4629.md) | Nov 10, 2020 |
| Linux | libvpx-devel RHEL 8 | 0:1.7.0-8.el8 | [RHSA-2020:4629](https://patchblox.com/security/data/fix/linux/rhsa-2020-4629.md) | Nov 4, 2020 |
| Linux | libvpx-devel ol 8 | 0:1.7.0-8.el8 | [ELSA-2020-4629](https://patchblox.com/security/data/fix/linux/elsa-2020-4629.md) | Nov 10, 2020 |
| Linux | libvpx5 Ubuntu 18.04.6 LTS (bionic) | 1.7.0-3ubuntu0.18.04.1 | [libvpx5 1.7.0-3ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libvpx5-1.7.0-3ubuntu0.18.04.1.md) | Sep 27, 2019 |
| Linux | vpx-tools Ubuntu 18.04.6 LTS (bionic) | 1.7.0-3ubuntu0.18.04.1 | [vpx-tools 1.7.0-3ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-vpx-tools-1.7.0-3ubuntu0.18.04.1.md) | Sep 27, 2019 |

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Data as of 2026-11-07T18:46:35Z 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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