Resource Exhaustion Affecting suricata package, versions <1:8.0.6-1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.45% (37th percentile)

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  • Snyk IDSNYK-DEBIAN14-SURICATA-19956480
  • published19 Sept 2026
  • disclosed18 Sept 2026

Introduced: 18 Sep 2026

CVE-2026-63448  (opens in a new tab)
CWE-400  (opens in a new tab)
CWE-401  (opens in a new tab)
CWE-407  (opens in a new tab)

How to fix?

Upgrade Debian:14 suricata to version 1:8.0.6-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream suricata package and not the suricata package as distributed by Debian. See How to fix? for Debian:14 relevant fixed versions and status.

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.17 and 8.0.6, the SMB parser can retain force-completed transactions on flows where Suricata sees payload in only one direction, including async-oneside flows, because cleanup waits for inspection in the unseen direction. The transaction creation paths in rust/src/smb can exceed the intended SMB_MAX_TX bound, and cleanup repeatedly scans the growing list. Sustained one-directional SMB traffic can therefore cause unbounded per-flow state and CPU and memory exhaustion. This issue is fixed in versions 8.0.6 and 7.0.17.

CVSS Base Scores

version 3.1