CVE-2025-29918

Suricata pcre: negated pcr can cause infinite loop

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.

Category

6.2
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.02%
Vendor Advisory github.com
Affected: OISF suricata
Published at:
Updated at:

References

Link Tags
https://github.com/OISF/suricata/security/advisories/GHSA-924c-vvm5-9mqx vendor advisory
https://github.com/OISF/suricata/commit/b14c67cbdf25fa6c7ffe0d04ddf3ebe67b12b50b patch
https://redmine.openinfosecfoundation.org/issues/7526 permissions required

Frequently Asked Questions

What is the severity of CVE-2025-29918?
CVE-2025-29918 has been scored as a medium severity vulnerability.
How to fix CVE-2025-29918?
To fix CVE-2025-29918, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-29918 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-29918 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-29918?
CVE-2025-29918 affects OISF suricata.
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