CVE-2025-29918— Suricata pcre: negated pcr can cause infinite loop
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I. Basic Information for CVE-2025-29918
Vulnerability Information
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Vulnerability Title
Suricata pcre: negated pcr can cause infinite loop
Source: NVD (National Vulnerability Database)
Vulnerability Description
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. A PCRE rule can be written that leads to an infinite loop when negated PCRE is used. Packet processing thread becomes stuck in infinite loop limiting visibility and availability in inline mode. This vulnerability is fixed in 7.0.9.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
不可达退出条件的循环(无限循环)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Suricata 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Suricata是Open Information Security基金会的一个网络IDS、IPS和NSM引擎。 Suricata存在安全漏洞，该漏洞源于PCRE规则问题，可能导致无限循环。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2025-29918
| # | POC Description | Source Link | Shenlong Link |
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Same Patch Batch · OISF · 2025-04-10 · 4 CVEs total
| CVE-2025-29915 | 7.5 HIGH | Suricata af-packet: defrag option can lead to truncated packets affecting visibility |
| CVE-2025-29916 | 6.2 MEDIUM | Suricata datasets: ruleset declared settings can lead to resource starvation |
| CVE-2025-29917 | 6.2 MEDIUM | Suricata decode_base64: signature can do large memory allocation |
IV. Related Vulnerabilities
Same product: suricata
- CVE-2026-31937
Suricata dcerpc: quadratic complexity in dcerpc buffering - CVE-2026-31935
Suricata http2: unbounded resource consumption - CVE-2026-31934
Suricata smtp/mine: quadratic complexity in extracting urls - CVE-2026-31933
Suricata stream: quadratic complexity in stream inspection - CVE-2026-31932
Suricata krb5: quadratic complexity in krb5 buffering
Same vendor: OISF
- CVE-2026-31937
Suricata dcerpc: quadratic complexity in dcerpc buffering - CVE-2026-31935
Suricata http2: unbounded resource consumption - CVE-2026-31934
Suricata smtp/mine: quadratic complexity in extracting urls - CVE-2026-31933
Suricata stream: quadratic complexity in stream inspection - CVE-2026-31932
Suricata krb5: quadratic complexity in krb5 buffering
Same weakness: CWE-835
- CVE-2026-42310
Pillow: PDF Parsing Trailer Infinite Loop (DoS) - CVE-2026-41511
OpenMcdf has an Infinite loop DoS via crafted CFB directory - CVE-2026-5407
Loop with Unreachable Exit Condition ('Infinite Loop') in Wi - CVE-2026-6536
Loop with Unreachable Exit Condition ('Infinite Loop') in Wi - CVE-2026-6534
Loop with Unreachable Exit Condition ('Infinite Loop') in Wi
V. Comments for CVE-2025-29918
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