VulnerabilityAnalyzed

CVE-2025-29915

The AF_PACKET defrag option is enabled by default and allows AF_PACKET to re-assemble fragmented packets before reaching Suricata.

HIGH 7.5EPSS 0.27%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.27%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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.

CVSS 3.1: 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS: 0.27% probability · 19th percentile
CISA KEV: Not listed
Weakness: CWE-347
Affected: oisf/suricata
Source: security-advisories@github.com

References

https://github.com/OISF/suricata/commit/d78f2c9a4e2b59f44daeddff098915084493d08dPatch
https://github.com/OISF/suricata/security/advisories/GHSA-7m5c-cqx4-x8mpIssue Tracking, Vendor Advisory
https://redmine.openinfosecfoundation.org/issues/5373Issue Tracking

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.