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OpenAdvisories
Medium · 5.7 CVE-2025-13763 EUVD-2025-209564

Libopensc: opensc: multiple uses of uninitialized variable

Published Apr 23, 2026 · Updated Nov 6, 2026 · Assigned by redhat

Description

Multiple uses of uninitialized variables were found in libopensc that may lead to information disclosure or application crash. An attack requires a crafted USB device or smart card that would present the system with specially crafted responses to the APDUs

Affected products

VendorProductAffectedFixed
OpenSC OpenSC < 0.27.0 0.27.0
Red Hat Red Hat Enterprise Linux 10 — —
Red Hat Red Hat Enterprise Linux 7 — —
Red Hat Red Hat Enterprise Linux 8 — —
Red Hat Red Hat Enterprise Linux 9 — —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 opensc 0.27.0~rc1-1 —
Debian 13 opensc No fix yet —
Debian 12 opensc No fix yet —
ReleasePackageFixed inAdvisory
Ubuntu 26.10 opensc No fix yet —
Ubuntu 26.04 LTS opensc No fix yet —
Ubuntu 25.10 opensc No fix yet —
Show 5 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro 24.04 LTS opensc No fix yet —
Ubuntu Pro 22.04 LTS opensc No fix yet —
Ubuntu Pro 20.04 LTS opensc No fix yet —
Ubuntu Pro 18.04 LTS opensc No fix yet —
Ubuntu Pro 16.04 LTS opensc No fix yet —
ReleasePackageFixed inAdvisory
openSUSE Tumbleweed opensc 0.27.1-1.1 openSUSE-SU-2026:10475-1

Advisories 2

References