Bug 2481454 (CVE-2026-9541)

Summary: CVE-2026-9541 squirrel: Squirrel: Heap-based buffer overflow in Cnut File Handler via ReadObject function
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Squirrel, affecting the Cnut File Handler component. A local user can exploit a heap-based buffer overflow vulnerability by manipulating the `ReadObject` function. This could lead to a limited impact on the system's confidentiality, integrity, and availability.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2481469, 2481470, 2481471, 2481472    
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Description OSIDB Bzimport 2026-05-26 14:02:18 UTC 
A security flaw has been discovered in Squirrel up to 3.2. Impacted is the function ReadObject of the file squirrel/sqobject.cpp of the component Cnut File Handler. Performing a manipulation results in heap-based buffer overflow. The attack is only possible with local access. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.