CVE-2026-22264
Publication date 27 January 2026
Last updated 28 January 2026
Ubuntu priority
Description
Suricata is a network IDS, IPS and NSM engine. Prior to version 8.0.3 and 7.0.14, an unsigned integer overflow can lead to a heap use-after-free condition when generating excessive amounts of alerts for a single packet. Versions 8.0.3 and 7.0.14 contain a patch. As a workaround, do not run untrusted rulesets or run with less than 65536 signatures that can match on the same packet.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| suricata | 25.10 questing |
Needs evaluation
|
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy |
Needs evaluation
|
|
| 18.04 LTS bionic |
Needs evaluation
|
|
| 16.04 LTS xenial |
Needs evaluation
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
7.4 · High
|
| Attack vector | Network |
| Attack complexity | High |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H |
References
Other references
- https://www.cve.org/CVERecord?id=CVE-2026-22264
- https://github.com/OISF/suricata/security/advisories/GHSA-mqr8-m3m4-2hw5
- https://github.com/OISF/suricata/commit/549d7bf60616de8e54686a188196453b5b22f715 (suricata-8.0.3)
- https://github.com/OISF/suricata/commit/5789a3d3760dbf33d93fc56c27bd9529e5bdc8f2 (suricata-7.0.14)
- https://github.com/OISF/suricata/commit/549d7bf60616de8e54686a188196453b5b22f715
- https://github.com/OISF/suricata/commit/5789a3d3760dbf33d93fc56c27bd9529e5bdc8f2
- https://github.com/OISF/suricata/commit/ac1eb394181530430fb7262969f423a1bf8f209b
- https://redmine.openinfosecfoundation.org/issues/8190