Bug 2453122 (CVE-2025-66037)

Summary: CVE-2025-66037 OpenSC: OpenSC: Out-of-bounds read via crafted input
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: low    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in OpenSC, an open-source smart card tools and middleware. An attacker could exploit this vulnerability by providing a specially crafted input. This crafted input causes an out-of-bounds heap read, where the software attempts to read data beyond its allocated memory.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2453188    
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Description OSIDB Bzimport 2026-03-30 18:02:07 UTC 
OpenSC is an open source smart card tools and middleware. Prior to version 0.27.0, feeding a crafted input to the fuzz_pkcs15_reader harness causes OpenSC to perform an out-of-bounds heap read in the X.509/SPKI handling path. Specifically, sc_pkcs15_pubkey_from_spki_fields() allocates a zero-length buffer and then reads one byte past the end of that allocation. This issue has been patched in version 0.27.0.