Description
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.8, a specially crafted TCP stream can lead to a very large buffer overflow while being zero-filled during initialization with memset due to an unsigned integer underflow. The issue has been addressed in Suricata 7.0.8.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OISF | suricata | < 7.0.8 | — |
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 | 1:7.0.8-1 | — |
| Debian 13 | suricata | 1:7.0.8-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| 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 | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | suricata | 8.0.0-1.1 | openSUSE-SU-2025:15394-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | suricata | 7.0.8-r0 | — |
| Alpine v3.23 | suricata | 7.0.8-r0 | — |
| Alpine v3.22 | suricata | 7.0.8-r0 | — |
| Alpine v3.21 | suricata | 7.0.8-r0 | — |
Advisories 1
- openSUSE-SU-2025:15394-1 libsuricata8_0_0-8.0.0-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
References
- https://github.com/OISF/suricata/security/advisories/GHSA-h2mv-7gg8-8x7v
- https://github.com/OISF/suricata/commit/282509f70c4ce805098e59535af445362e3e9ebd
- https://github.com/OISF/suricata/commit/8900041405dbb5f9584edae994af2100733fb4be
- https://github.com/OISF/suricata/commit/9a53ec43b13f0039a083950511a18bf6f408e432
- https://redmine.openinfosecfoundation.org/issues/7393