CVE-2026-22264 (GCVE-0-2026-22264)
Vulnerability from cvelistv5 – Published: 2026-01-27 18:33 – Updated: 2026-01-28 14:02
VLAI
EPSS
VEX
Title
Suricata detect/alert: heap-use-after-free on alert queue expansion
Summary
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.
Severity
7.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-28 14:02 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/OISF/suricata/security/advisor… | x_refsource_CONFIRM |
| https://github.com/OISF/suricata/commit/549d7bf60… | x_refsource_MISC |
| https://github.com/OISF/suricata/commit/5789a3d37… | x_refsource_MISC |
| https://github.com/OISF/suricata/commit/ac1eb3941… | x_refsource_MISC |
| https://redmine.openinfosecfoundation.org/issues/8190 | x_refsource_MISC |
Impacted products
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"discovery": "UNKNOWN"
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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