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HIGHCVE-2026-22264Published Modified CNA GitHub_M

CVE-2026-22264: Suricata detect/alert: heap-use-after-free on alert queue expansion

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.

Metrics

CVSS v3.1
7.4
Severity
HIGH
Fixed in
Affected Products
1
Affected packages
  • OISF / suricata
    < 7.0.14 · >= 8.0.0, < 8.0.3
CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H