Description
Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. Versions 7.0.11 and below, as well as 8.0.0, are vulnerable to detection bypass when crafted traffic sends multiple SYN packets with different sequence numbers within the same flow tuple, which can cause Suricata to fail to pick up the TCP session. In IDS mode this can lead to a detection and logging bypass. In IPS mode this will lead to the flow getting blocked. This issue is fixed in versions 7.0.12 and 8.0.1.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OISF | suricata | < 7.0.12, >= 8.0.0, < 8.0.1 | — |
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.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | suricata | 1:8.0.1-1 | — |
| Debian 13 | suricata | 1:7.0.10-1+deb13u1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | suricata | No fix yet | — |
| Ubuntu 26.04 LTS | suricata | No fix yet | — |
| Ubuntu 25.10 | suricata | No fix yet | — |
| Ubuntu 24.04 LTS | suricata | No fix yet | — |
| Ubuntu 22.04 LTS | suricata | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | suricata | No fix yet | — |
| Ubuntu 16.04 LTS | suricata | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | suricata | 8.0.1-1.1 | openSUSE-SU-2025:15592-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | suricata | 8.0.1-r0 | — |
Advisories 2
- WID-SEC-2026-1730 Xerox FreeFlow Print Server: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff BSI CERT-Bund (WID) · Jul 16, 2026
- openSUSE-SU-2025:15592-1 libsuricata8_0_1-8.0.1-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
References
- https://github.com/OISF/suricata/security/advisories/GHSA-v8hv-6v7x-4c2r
- https://github.com/OISF/suricata/commit/be6315dba0d9101b11d16e9dacfe2822b3792f1b
- https://github.com/OISF/suricata/commit/e91b03c90385db15e21cf1a0e85b921bf92b039e
- https://forum.suricata.io/t/suricata-8-0-1-and-7-0-12-released/6018