Description
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.5 and 6.0.19, a small amount of HTTP/2 traffic can lead to Suricata using a large amount of memory. The issue has been addressed in Suricata 7.0.5 and 6.0.19. Workarounds include disabling the HTTP/2 parser and reducing `app-layer.protocols.http2.max-table-size` value (default is 65536).
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OISF | suricata | >= 7.0.0, <= 7.0.4, >= 6.0.0, <= 6.0.18 | — |
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 | 1:7.0.5-1 | — |
| Debian 13 | suricata | 1:7.0.5-1 | — |
| Debian 11 | suricata | 1:6.0.1-3+deb11u1 | DLA-4103-1 |
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 | 8.0.0-1.1 | openSUSE-SU-2025:15394-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | suricata | 7.0.6-r0 | — |
| Alpine v3.23 | suricata | 7.0.6-r0 | — |
| Alpine v3.22 | suricata | 7.0.6-r0 | — |
| Alpine v3.21 | suricata | 7.0.6-r0 | — |
| Alpine v3.20 | suricata | 7.0.6-r0 | — |
Advisories 2
- openSUSE-SU-2025:15394-1 libsuricata8_0_0-8.0.0-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- DLA-4103-1 suricata - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- https://github.com/OISF/suricata/security/advisories/GHSA-9jxm-qw9v-266r
- https://github.com/OISF/suricata/commit/08d93f7c3762781b743f88f9fdc4389eb9c3eb64
- https://github.com/OISF/suricata/commit/c0af92295e833d1db29b184d63cd3b829451d7fd
- https://github.com/OISF/suricata/commit/d24b37a103c04bb2667e449e080ba4c8e56bb019
- https://github.com/OISF/suricata/commit/e68ec4b227d19498f364a41eb25d3182f0383ca5
- https://redmine.openinfosecfoundation.org/issues/6892
- https://redmine.openinfosecfoundation.org/issues/6900