Bug 2483280 (CVE-2026-40510)

Summary: CVE-2026-40510 opensc: OpenSC: Memory corruption via crafted PIV smart card
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: 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. A physically present attacker can exploit a stack buffer overflow vulnerability in the `piv_process_history()` function by presenting a specially crafted Personal Identity Verification (PIV) smart card or USB device. This can lead to memory corruption within the system, potentially causing instability or unexpected behavior.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2490262    
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Description OSIDB Bzimport 2026-05-29 14:02:33 UTC
OpenSC before 0.27.0-rc1, fixed in commit 3f24f0b, contains a stack buffer overflow vulnerability in piv_process_history() in src/libopensc/card-piv.c that allows physically present attackers to trigger memory corruption by presenting a crafted PIV smart card or USB device returning a URL field longer than 118 bytes in the Key History Object ASN.1 response.