Medium
opensc — security advisory
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.
- Products
- opensc
- Affected versions
- 0.15.0-1ubuntu1, 0.15.0-1ubuntu1+esm1, 0.15.0-1ubuntu1+esm2, 0.15.0-1ubuntu1+esm3, 0.17.0-1, 0.17.0-2, 0.17.0-2build1, 0.17.0-3, 0.17.0-3ubuntu0.1~esm1, 0.17.0-3ubuntu0.1~esm2, 0.17.0-3ubuntu0.1~esm3, 0.19.0-2, 0.20.0-1, 0.20.0-2, 0.20.0-3, 0.20.0-3ubuntu0.1~esm1, 0.20.0-3ubuntu0.1~esm2, 0.20.0-3ubuntu0.1~esm3, 0.20.0-3ubuntu0.1~esm4, 0.21.0-1ubuntu1, 0.22.0-1ubuntu2, 0.22.0-1ubuntu2+esm1, 0.22.0-1ubuntu2.1, 0.22.0-1ubuntu2.1+esm1, 0.23.0-1ubuntu4, 0.24.0~rc1-1, 0.25.0~rc1-1, 0.25.0~rc1-1build1, 0.25.0~rc1-1build2, 0.25.0~rc1-1ubuntu0.1, 0.25.0~rc1-1ubuntu0.1~esm1, 0.25.0~rc1-1ubuntu0.2, 0.25.0~rc1-1ubuntu0.2+esm1, 0.26.1-3, 0.26.1-3ubuntu1, 0.27.0~rc1-1, 0.27.1-2, 0.27.1-2ubuntu1, 0.27.1-2ubuntu2
- Fixed versions
- Not specified
- CVEs
- CVE-2026-103531
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 01:58 UTC · Revision 1
Source evidence
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.
osv:UBUNTU-CVE-2026-103531
opensc
Fixed versions: Not specified
opensc
Fixed versions: Not specified
opensc
Fixed versions: Not specified
opensc
Fixed versions: Not specified
opensc
Fixed versions: Not specified
opensc
Fixed versions: Not specified
opensc
Fixed versions: Not specified
Complete source record
{
"id": "b1a9c5dc1d35c551691619413930abedef6b5d96281da506a0983911d541817c",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-103531",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-103531",
"summary": "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.",
"evidence": "osv:UBUNTU-CVE-2026-103531",
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{
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{
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{
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{
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"severity": "medium",
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"aliases": [
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],
"modified": "2026-10-17T12:57:58.422504999Z",
"provider": "osv",
"upstream": [
"CVE-2026-103531"
],
"references": [
"https://ubuntu.com/security/CVE-2026-103531",
"https://www.cve.org/CVERecord?id=CVE-2026-103531",
"https://github.com/OpenSC/OpenSC/pull/3812",
"https://github.com/OpenSC/OpenSC/",
"https://github.com/OpenSC/OpenSC/commit/ad730304052937c32b4eb489a06835ac6123632c",
"https://vuldb.com/cve/CVE-2026-103531",
"https://vuldb.com/submit/956910",
"https://vuldb.com/vuln/412343",
"https://vuldb.com/vuln/412343/cti"
]
},
"related_cves": [
{
"value": "CVE-2026-103531",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 357800,
"published_at": "2026-10-01T01:16:00+00:00"
}