Bug 2542268 (CVE-2026-100895)

Summary:	CVE-2026-100895 openarc: openarc: Denial of service via null pointer dereference in arc_parse_canon_t
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	xavier
Target Milestone:	---	Keywords:	Security
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Hardware:	All
OS:	Linux
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Doc Text:	A flaw was found in OpenARC. A remote attacker can trigger a null pointer dereference by providing specially crafted input handled by the arc_parse_canon_t function during canonicalization parsing. This issue causes the application to terminate unexpectedly, resulting in a Denial of Service (DoS).	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2542274, 2542275
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Description OSIDB Bzimport 2026-09-28 01:31:20 UTC

A security flaw has been discovered in Trusted Domain Project OpenARC up to 1.0.0.Beta1. Impacted is the function arc_parse_canon_t in the library libopenarc/arc-canon.c of the component libopenarc. The manipulation results in null pointer dereference. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks. Upgrading to version 1.0.0.Beta0 is recommended to address this issue. Upgrading the affected component is advised.

Comment 1 Xavier Bachelot 2026-09-28 15:26:55 UTC

This was fixed with https://github.com/trusteddomainproject/OpenARC/commit/bf05630604c0415bb200e0118817186d824e5c8f which was released in openarc 1.0.0 beta 2