Bug 2511891 - CVE-2026-67870 open62541: open62541: Denial of Service via incomplete validation in AddReferences [fedora-all]
Summary: CVE-2026-67870 open62541: open62541: Denial of Service via incomplete validat...
Keywords:
Status: NEW
Alias: None
Product: Fedora
Classification: Fedora
Component: open62541
Version: 45
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Jens Reimann
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["d0261188-66a5-49eb-a722-6...
Depends On:
Blocks: CVE-2026-67870
TreeView+ depends on / blocked
 
Reported: 2026-08-06 04:19 UTC by Jeremy Choi
Modified: 2026-08-17 15:48 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Type: ---
Embargoed:

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Description Jeremy Choi 2026-08-06 04:19:11 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

In open62541 v1.5.5, the server-side AddReferences implementation contains an incomplete validation flaw for non-local ExpandedNodeId targets. A remote attacker can send a crafted AddReferencesRequest with an empty targetServerUri and a non-zero targetNodeId.serverIndex, causing the target node pointer to remain NULL while execution continues.
Comment 1 Aoife Moloney 2026-08-17 15:48:05 UTC 
This bug appears to have been reported against 'rawhide' during the Fedora Linux 45 development cycle.
Changing version to 45.
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