Description
A heap buffer overflow vulnerability exists in the Jansi JNI "ioctl()" wrapper due to a lack of size verification for the argument array before the system call. This can lead to heap corruption and application crashes (DoS).
All versions are believed to be vulnerable. This project is unmaintained at the time of CVE assignment.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| FuseSource | jansi | ≤ 2.4.3 | — |
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 | jansi +1 | No fix yet | — |
| Debian 13 | jansi +1 | No fix yet | — |
| Debian 12 | jansi +1 | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | jansi | No fix yet | — |
| Ubuntu 26.04 LTS | jansi | No fix yet | — |
| Ubuntu 25.10 | jansi | No fix yet | — |
| Ubuntu 24.04 LTS | jansi | No fix yet | — |
| Ubuntu 22.04 LTS | jansi | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | jansi | No fix yet | — |
| Ubuntu 18.04 LTS | jansi | No fix yet | — |
| Ubuntu 16.04 LTS | jansi | No fix yet | — |
| Ubuntu 14.04 LTS | jansi | No fix yet | — |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | jansi | No fix yet | — |
Advisories 1
- WID-SEC-2026-2801 IBM InfoSphere Information Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 12, 2026
References
- https://cert.pl/en/posts/2026/06/CVE-2026-8484 third-party-advisory
- https://github.com/fusesource/jansi/tree/master product