Bug 2411995 (CVE-2025-45663)

Summary: CVE-2025-45663 netsurf: NetSurf uninitialized memory access
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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 memory exposure flaw has been discovered in NetSurf. In the `_dom_event_initialise` function, several JavaScript-accessible fields of the dom_event structure are left uninitialized. It appears to leak the lower four bytes of a valid heap address on 64-bit systems. While likely not exploitable on its own, this bug may serve as a partial information leak primitive for other exploits.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 2412078, 2412079, 2412077    
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Description OSIDB Bzimport 2025-11-03 15:02:24 UTC
An issue in NetSurf v3.11 causes the application to read uninitialized heap memory when creating a dom_event structure.