CVE-2026-45751
Publication date 14 September 2026
Last updated 14 September 2026
Ubuntu priority
Description
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, Suricata's inspection-buffer helper could leave an inspection pointer referencing freed memory after a chained transform caused the backing buffer to be reallocated. The issue is reached during a specific network traffic processing, and requires a specific but not malicious rule. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, avoid rules that chain `dotprefix` transform after another one.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| suricata | 26.04 LTS resolute |
Needs evaluation
|
| 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
5.9 · Medium
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
References
Other references
- https://www.cve.org/CVERecord?id=CVE-2026-45751
- https://github.com/OISF/suricata/security/advisories/GHSA-59q6-j4w8-8pjx
- https://redmine.openinfosecfoundation.org/issues/8542 (suricata-7.0.16)
- https://redmine.openinfosecfoundation.org/issues/8540 (suricata-8.0.5)
- https://github.com/OISF/suricata/commit/89cde65f8d4314b007c723843b79dfa9e5e26e88 (suricata-7.0.16)
- https://github.com/OISF/suricata/commit/3d371fff99d7d0af0912543174c6ea2abb0ff6a3 (suricata-8.0.5)
- https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315
- https://redmine.openinfosecfoundation.org/issues/8537