Bug 2433449 (CVE-2026-22259) - CVE-2026-22259 suricata: Suricata dnp3: unbounded transaction growth
Summary: CVE-2026-22259 suricata: Suricata dnp3: unbounded transaction growth
Keywords:
Status: NEW
Alias: CVE-2026-22259
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2433499 2433500 2433501 2433502 2433503
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-01-27 18:01 UTC by OSIDB Bzimport
Modified: 2026-01-27 20:07 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-01-27 18:01:37 UTC 
Suricata is a network IDS, IPS and NSM engine. Prior to versions 8.0.3 and 7.0.14, specially crafted traffic can cause Suricata to consume large amounts of memory while parsing DNP3 traffic. This can lead to the process slowing down and running out of memory, potentially leading to it getting killed by the OOM killer. Versions 8.0.3 or 7.0.14 contain a patch. As a workaround, disable the DNP3 parser in the suricata yaml (disabled by default).
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