CVE-2026-22259
Publication date 27 January 2026
Last updated 28 January 2026
Ubuntu priority
Description
Suricata is a network IDS, IPS and NSM engine. Prior to versions 8.0.3 and 7.0.14, specially crafted traffic can cause Suricata to consume large amounts of memory while parsing DNP3 traffic. This can lead to the process slowing down and running out of memory, potentially leading to it getting killed by the OOM killer. Versions 8.0.3 or 7.0.14 contain a patch. As a workaround, disable the DNP3 parser in the suricata yaml (disabled by default).
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| suricata | 26.04 LTS resolute |
Not affected
|
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy |
Needs evaluation
|
|
| 18.04 LTS bionic |
Needs evaluation
|
|
| 16.04 LTS xenial |
Needs evaluation
|
Severity score breakdown
CVSS version: CVSS v3.0
Base score
7.5 · High
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
Other references
- https://www.cve.org/CVERecord?id=CVE-2026-22259
- https://github.com/OISF/suricata/security/advisories/GHSA-878h-2x6v-84q9
- https://github.com/OISF/suricata/commit/50cac2e2465ca211eabfa156623e585e9037bb7e (suricata-8.0.3)
- https://github.com/OISF/suricata/commit/63225d5f8ef64cc65164c0bb1800730842d54942 (suricata-7.0.14)
- https://github.com/OISF/suricata/commit/50cac2e2465ca211eabfa156623e585e9037bb7e
- https://github.com/OISF/suricata/commit/63225d5f8ef64cc65164c0bb1800730842d54942
- https://redmine.openinfosecfoundation.org/issues/8181