Deadlock in Suricata - CVE-2026-46352
Published: June 3, 2026
Vulnerability identifier: #VU133269
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-46352
CWE-ID: CWE-833
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Open Information Security Foundation
Affected software:
Suricata
Suricata
Detailed vulnerability description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to deadlock in IP defragmentation code when processing fragmented traffic containing an encapsulated tunnel protocol whose payload is itself fragmented. A remote attacker can send specially crafted fragmented traffic to cause a denial of service.
How to mitigate CVE-2026-46352
Install security update from vendor's website.