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

7.4 / 10

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H

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.

Basic Information

ID CVE-2026-22264

Source GitHub_M

Published Jan 27, 2026 at 18:33

Affected Product

Vendor OISF

Product suricata

Version < 7.0.14

Affected Versions OISF suricata < 7.0.14
OISF suricata >= 8.0.0, < 8.0.3

CWE Classification

CWE-416

References

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    "published": "2026-01-27T18:33:50.354Z",
    "modified": "2026-01-27T18:33:50.354Z",
    "type": "cve",
    "title": "Suricata detect/alert: heap-use-after-free on alert queue expansion",
    "source": "GitHub_M",
    "references": "https://github.com/OISF/suricata/security/advisories/GHSA-mqr8-m3m4-2hw5\nhttps://github.com/OISF/suricata/commit/549d7bf60616de8e54686a188196453b5b22f715\nhttps://github.com/OISF/suricata/commit/5789a3d3760dbf33d93fc56c27bd9529e5bdc8f2\nhttps://github.com/OISF/suricata/commit/ac1eb394181530430fb7262969f423a1bf8f209b\nhttps://redmine.openinfosecfoundation.org/issues/8190",
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