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CVE-2025-29918

Suricata pcre: negated pcr can cause infinite loop

MEDIUM
5.5
CVSS Score
Published: April 10, 2025 at 09:02 PM UTC
Updated: June 17, 2026 at 09:05 AM UTC
1 product affected across 1 vendorSuricata

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Suricata· Oisf
95%
v < 7.0.9
Affected range stops below 7.0.9, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

x_refsource_MISCPatch
Source: [email protected]
https://github.com/OISF/suricata/commit/b14c67cbdf25fa6c7ffe0d04ddf3ebe67b12b50b
x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://github.com/OISF/suricata/security/advisories/GHSA-924c-vvm5-9mqx
x_refsource_MISCPermissions Required
Source: [email protected]
https://redmine.openinfosecfoundation.org/issues/7526
Source: af854a3a-2127-422b-91ae-364da2661108
https://lists.debian.org/debian-lts-announce/2025/03/msg00029.html

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-835

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