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Critical · 9.4 CVE-2026-94084 EUVD-2026-83639GHSA-4jpj-5857-48jp

Suricata before 8.0.7 has an Http2ThreadMultiBuf use-after-free when a transaction is inspected by rules that use http.response_header with…

Published Sep 20, 2026 · Updated Sep 22, 2026 · Assigned by mitre

Description

Suricata before 8.0.7 has an Http2ThreadMultiBuf use-after-free when a transaction is inspected by rules that use http.response_header with and without a transform.

Affected products

VendorProductAffectedFixed
OISF Suricata < 8.0.7 8.0.7

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 1:8.0.7-1 —
Debian 13 suricata No fix yet —
ReleasePackageFixed inAdvisory
Ubuntu 26.10 suricata No fix yet —
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 —
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 16.04 LTS suricata No fix yet —

References