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Suricata detect/transform: use-after-free in decompress transforms

Published Sep 10, 2026

Description

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Starting in version 8.0.0 and prior to version 8.0.5, when certain detection transforms are chained, the decompress transform pipeline could read from an inspection buffer after it had been reallocated and freed. The issue is reached during network traffic processing, but requires a malicious rule as Suricata will crash whatever the traffic. Version 8.0.5 contains a fix. As a workaround, avoid rules that chain `gunzip` or `zlib_deflate` with `max-size` bigger than 4096 after another transform.

Affected products

Remediation

No remediation recorded yet.

Metrics

Weaknesses (1)

References (3)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner GitHub_M
Published Sep 10, 2026
Updated Sep 11, 2026
Reserved May 13, 2026
CISA Vulnrichment
Updated Sep 11, 2026
NVD
Status Awaiting Analysis
Modified Sep 11, 2026
Red Hat
Severity n/a
Public date n/a