# CVE-2019-11023: libgv-lua: The agroot() function in cgraph\obj.c in libcgraph.a in Graphviz 2.39.20160612.1140 has a NULL pointer dereference, a...

CVE-2019-11023 is fixed in 17 products on 1 platform, first by graphviz 2.40.1-2ubuntu0.1~esm1, released April 29, 2021. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2019-11023
- Priority: Routine
- CVSS: n/a (Low)
- EPSS: 0.0489
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 8, 2019

## Description

The agroot() function in cgraph\obj.c in libcgraph.a in Graphviz 2.39.20160612.1140 has a NULL pointer dereference, as demonstrated by graphml2gv.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | graphviz Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [graphviz 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-graphviz-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 |
| Linux | libcdt5 Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [libcdt5 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libcdt5-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 |
| Linux | libcgraph6 Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [libcgraph6 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libcgraph6-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 |
| Linux | libgv-guile Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [libgv-guile 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libgv-guile-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 |
| Linux | libgv-lua Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [libgv-lua 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libgv-lua-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 |
| Linux | libgv-perl Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [libgv-perl 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libgv-perl-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 |
| Linux | libgv-php7 Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [libgv-php7 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libgv-php7-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 |
| Linux | libgv-ruby Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [libgv-ruby 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libgv-ruby-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 |
| Linux | libgv-tcl Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [libgv-tcl 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libgv-tcl-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 |
| Linux | libgvc6 Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [libgvc6 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libgvc6-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 |
| Linux | libgvc6-plugins-gtk Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [libgvc6-plugins-gtk 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libgvc6-plugins-gtk-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 |
| Linux | libgvpr2 Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [libgvpr2 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libgvpr2-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 |
| Linux | liblab-gamut1 Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [liblab-gamut1 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-liblab-gamut1-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 |
| Linux | libpathplan4 Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [libpathplan4 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libpathplan4-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 |
| Linux | libxdot4 Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [libxdot4 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libxdot4-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 |
| Linux | python-gv Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [python-gv 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python-gv-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 |
| Linux | python3-gv Ubuntu 18.04.6 LTS (bionic) | 2.40.1-2ubuntu0.1~esm1 | [python3-gv 2.40.1-2ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python3-gv-2.40.1-2ubuntu0.1-esm1.md) | Apr 29, 2021 |

---

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

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.