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OpenAdvisories
Medium · 5.9 CVE-2026-45752 EUVD-2026-75730

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

Published Sep 10, 2026 · Updated Sep 11, 2026 · Assigned by GitHub_M

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

VendorProductAffectedFixed
OISF suricata >= 8.0.0, < 8.0.5 —

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.

ReleasePackageFixed inAdvisory
Debian 14 suricata 1:8.0.5-1 —
Debian 13 suricata No fix yet —
ReleasePackageFixed inAdvisory
Ubuntu 26.04 LTS suricata No fix yet —
Ubuntu 24.04 LTS suricata No fix yet —
Ubuntu 22.04 LTS suricata No fix yet —
Ubuntu 18.04 LTS suricata No fix yet —
Ubuntu 16.04 LTS suricata No fix yet —
ReleasePackageFixed inAdvisory
openSUSE Tumbleweed suricata 8.0.5-1.1 openSUSE-SU-2026:10885-1

Advisories 1

References