CVE-2026-45751
Suricata detect/transform: use-after-free in dotprefix transform
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.
INFO
Published Date :
Sept. 10, 2026, 8:28 p.m.
Last Modified :
Sept. 10, 2026, 8:28 p.m.
Remotely Exploit :
No
Source :
GitHub_M
Solution
- Update Suricata to version 7.0.16 or 8.0.5.
- Avoid rules chaining 'dotprefix' after another transform.
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