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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | graphviz | No fix yet | — |
| Debian 13 | graphviz | No fix yet | — |
| Debian 12 | graphviz | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | graphviz | 2.42.2-3ubuntu0.1~esm1 | USN-5971-1 |
| Ubuntu Pro 18.04 LTS | graphviz | 2.40.1-2ubuntu0.1~esm1 | USN-5971-1 |
| Ubuntu Pro 16.04 LTS | graphviz | 2.38.0-12ubuntu2.1+esm1 | USN-5264-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 14.04 LTS | graphviz | 2.36.0-0ubuntu3.2+esm1 | USN-5971-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP2 | graphviz +1 | 2.40.1-6.3.2 | SUSE-SU-2019:1267-3 |
| SLES 15 SP1 | graphviz +1 | 2.40.1-6.3.2 | SUSE-SU-2019:1267-3, SUSE-SU-2019:1267-2 |
| SLES 15 | graphviz +1 | 2.40.1-6.3.2 | SUSE-SU-2019:1267-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | graphviz | 2.48.0-4.2 | openSUSE-SU-2024:10821-1 |
| openSUSE Leap 15.2 | graphviz | 2.40.1-lp152.7.2.1 | openSUSE-SU-2020:0906-1, openSUSE-SU-2020:0876-1 |
| openSUSE Leap 15.2 | graphviz-addons | 2.40.1-lp152.7.3.1 | openSUSE-SU-2020:0906-1, openSUSE-SU-2020:0876-1 |
| openSUSE Leap 15.1 | graphviz +1 | 2.40.1-lp151.6.3.1 | openSUSE-SU-2019:1434-1 |
| openSUSE Leap 15.0 | graphviz +1 | 2.40.1-lp150.5.3.1 | openSUSE-SU-2019:1459-1 |
Advisories 10
- USN-5971-1 graphviz vulnerabilities Ubuntu Security Notices (USN) · Jun 29, 2026
- USN-5264-1 graphviz vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- openSUSE-SU-2020:0906-1 Security update for graphviz SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:1267-1 Security update for graphviz SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:1434-1 Security update for graphviz SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:1267-3 Security update for graphviz SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:1267-2 Security update for graphviz SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10821-1 graphviz-2.48.0-4.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:1459-1 Security update for graphviz SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:0876-1 Security update for graphviz SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://gitlab.com/graphviz/graphviz/issues/1517
- https://research.loginsoft.com/bugs/null-pointer-dereference-in-function-agroot/
- FEDORA-2019-521e6c567c vendor-advisory
- FEDORA-2019-feeb1a2543 vendor-advisory
- openSUSE-SU-2019:1434 vendor-advisory
- openSUSE-SU-2019:1459 vendor-advisory
- openSUSE-SU-2020:0876 vendor-advisory
- openSUSE-SU-2020:0906 vendor-advisory