CVE-2025-29915

Suricata af-packet: defrag option can lead to truncated packets affecting visibility

Description

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. The AF_PACKET defrag option is enabled by default and allows AF_PACKET to re-assemble fragmented packets before reaching Suricata. However the default packet size in Suricata is based on the network interface MTU which leads to Suricata seeing truncated packets. Upgrade to Suricata 7.0.9, which uses better defaults and adds warnings for user configurations that may lead to issues.

Category

7.5
CVSS
Severity: High
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-7m5c-cqx4-x8mp vendor advisory issue tracking
https://github.com/OISF/suricata/commit/d78f2c9a4e2b59f44daeddff098915084493d08d patch
https://redmine.openinfosecfoundation.org/issues/5373 issue tracking

Frequently Asked Questions

What is the severity of CVE-2025-29915?
CVE-2025-29915 has been scored as a high severity vulnerability.
How to fix CVE-2025-29915?
To fix CVE-2025-29915, 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-2025-29915 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-29915 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-2025-29915?
CVE-2025-29915 affects OISF suricata.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.