Description
NULL pointer dereference vulnerability in the rebuild_vlists function in lib/dotgen/conc.c in the dotgen library in Graphviz 2.40.1 allows remote attackers to cause a denial of service (application crash) via a crafted file.
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 | 2.40.1-6 | — |
| Debian 13 | graphviz | 2.40.1-6 | — |
| Debian 12 | graphviz | 2.40.1-6 | — |
| Debian 9 | graphviz | 2.38.0-17+deb9u1 | DLA-2659-1 |
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 SP1 | graphviz | 2.40.1-6.6.4 | SUSE-SU-2020:2346-1 |
| SLES 15 SP1 | graphviz-addons | 2.40.1-6.6.8 | SUSE-SU-2020:2346-1 |
| SLES 15 | graphviz-addons | 2.40.1-6.6.8 | SUSE-SU-2020:2346-1 |
| SLES 12 SP5 | graphviz | 2.28.0-29.3.8 | SUSE-SU-2020:3090-1 |
| SLES 12 SP5 | graphviz-plugins | 2.28.0-29.3.17 | SUSE-SU-2020:3090-1 |
| SLES 12 SP4 | graphviz-plugins | 2.28.0-29.3.17 | SUSE-SU-2020:3090-1 |
| SLES 12 SP3 | graphviz-plugins | 2.28.0-29.3.17 | SUSE-SU-2020:3090-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 11 SP4 | graphviz-plugins | 2.20.2-8.3.6 | SUSE-SU-2020:14524-1 |
| SLES for SAP 12 SP5 | graphviz | 2.28.0-29.3.8 | SUSE-SU-2020:3090-1 |
| SLES for SAP 12 SP5 | graphviz-plugins | 2.28.0-29.3.17 | SUSE-SU-2020:3090-1 |
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 +1 | 2.40.1-lp152.7.7.1 | openSUSE-SU-2020:1303-1 |
| openSUSE Leap 15.1 | graphviz +1 | 2.40.1-lp151.6.6.1 | openSUSE-SU-2020:1294-1 |
Advisories 9
- USN-5971-1 graphviz vulnerabilities Ubuntu Security Notices (USN) · Jun 29, 2026
- USN-5264-1 graphviz vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- DLA-2659-1 graphviz - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2020:14524-1 Security update for graphviz SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:2346-1 Security update for graphviz SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3090-1 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-2020:1303-1 Security update for graphviz SUSE / openSUSE Security Updates · May 7, 2025
- openSUSE-SU-2020:1294-1 Security update for graphviz SUSE / openSUSE Security Updates · May 7, 2025
References
- USN-3731-1 vendor-advisory
- FEDORA-2018-fd850e033d vendor-advisory
- FEDORA-2018-25674bb48e vendor-advisory
- https://gitlab.com/graphviz/graphviz/issues/1367
- https://bugzilla.redhat.com/show_bug.cgi?id=1579254
- [debian-lts-announce] 20210513 [SECURITY] [DLA 2659-1] graphviz security update mailing-list