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Date: Sun, 4 Oct 2026 21:57:20 +0200
From: Salvatore Bonaccorso <carnil@debian.org>
To: submit@bugs.debian.org
Subject: opensc: CVE-2026-103531
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Source: opensc
Version: 0.27.1-2
X-Debbugs-CC: team@security.debian.org
Severity: important
Tags: security upstream
Forwarded: https://github.com/OpenSC/OpenSC/pull/3812

Hi,

The following vulnerability was published for opensc.

CVE-2026-103531[0]:
| A flaw has been found in OpenSC up to 0.27.1. The impacted element
| is the function setcos_construct_fci_44 of the file
| src/libopensc/card-setcos.c. Executing a manipulation of the
| argument type_attr can lead to stack-based buffer overflow. The
| attack can be launched remotely. This patch is called
| ad730304052937c32b4eb489a06835ac6123632c. It is best practice to
| apply a patch to resolve this issue.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-103531
    https://www.cve.org/CVERecord?id=CVE-2026-103531
[1] https://github.com/OpenSC/OpenSC/pull/3812

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore
]