Medium
Security advisory
OpenSC before 0.20.0 has a double free in coolkey_free_private_data because coolkey_add_object in libopensc/card-coolkey.c lacks a uniqueness check.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2019-20792
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 12:29 UTC · Revision 1
Source evidence
OpenSC before 0.20.0 has a double free in coolkey_free_private_data because coolkey_add_object in libopensc/card-coolkey.c lacks a uniqueness check.
osv:CVE-2019-20792
Complete source record
{
"id": "91429b48b0656a8ce4ebaff4efd3a1c2b8ea4f1957a96e9cd83ae405f750b0ad",
"url": "https://osv.dev/vulnerability/CVE-2019-20792",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2019-20792",
"summary": "OpenSC before 0.20.0 has a double free in coolkey_free_private_data because coolkey_add_object in libopensc/card-coolkey.c lacks a uniqueness check.",
"evidence": "osv:CVE-2019-20792",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2019-20792",
"aliases": [
"CVE-2019-20792"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/opensc/opensc",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "45e29056ccde422e70ed3585084a7f150c632515"
},
{
"fixed": "c246f6f69a749d4f68626b40795a4f69168008f4"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:opensc_project:opensc:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "0.20.0"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "c246f6f69a749d4f68626b40795a4f69168008f4"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"0.20.0-rc3",
"0.20.0-rc2",
"0.20.0-rc1",
"0.19.0",
"0.19.0-rc1",
"0.18.0",
"0.18.0-rc2",
"0.18.0-rc1",
"0.17.0",
"0.17.0-rc2",
"0.17.0-rc1",
"0.16.0",
"v0.16.0-pre1",
"0.15.0",
"0.14.0",
"0.14.0rtm",
"0.14.0rc2",
"0.13.0",
"0.13.0rc1",
"0.13.0pre1",
"v0.12.2",
"0.12.2",
"0.12.2-rc1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-20792.json",
"vanir_signatures": [
{
"id": "CVE-2019-20792-0e4109b3",
"digest": {
"length": 2619,
"function_hash": "293648382138511495160968861622353662031"
},
"source": "https://github.com/opensc/opensc/commit/45e29056ccde422e70ed3585084a7f150c632515",
"target": {
"file": "src/tests/fuzzing/fuzz_pkcs15_reader.c",
"function": "LLVMFuzzerTestOneInput"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
},
{
"id": "CVE-2019-20792-3c6d3c4a",
"digest": {
"threshold": 0.9,
"line_hashes": [
"230985030794508757992760968719559967350",
"310435344726459438381937301013045244530",
"288673917574911987998876666203952460375"
]
},
"source": "https://github.com/opensc/opensc/commit/c246f6f69a749d4f68626b40795a4f69168008f4",
"target": {
"file": "src/libopensc/card-coolkey.c"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
},
{
"id": "CVE-2019-20792-775a11f1",
"digest": {
"threshold": 0.9,
"line_hashes": [
"194062470009936436447945246988331101219",
"251408580405775135383116960595976968951",
"284045830406911495116073497720354821007",
"270953615497185537070235313685442968422",
"20393014985081258602878277868967455511",
"91070933187673124866303201171236791528",
"240044258610078274294209636274322753269",
"302641261595298239604372272751171178922"
]
},
"source": "https://github.com/opensc/opensc/commit/45e29056ccde422e70ed3585084a7f150c632515",
"target": {
"file": "src/tests/fuzzing/fuzz_pkcs15_reader.c"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
},
{
"id": "CVE-2019-20792-f5fba478",
"digest": {
"length": 716,
"function_hash": "81983556100758335818887154183925867305"
},
"source": "https://github.com/opensc/opensc/commit/c246f6f69a749d4f68626b40795a4f69168008f4",
"target": {
"file": "src/libopensc/card-coolkey.c",
"function": "coolkey_add_object"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
}
],
"vanir_signatures_modified": "2026-10-20T13:43:01Z"
}
}
],
"modified": "2026-10-20T13:43:01.788857560Z",
"provider": "osv",
"references": [
"https://github.com/OpenSC/OpenSC/compare/0.19.0...0.20.0",
"https://github.com/OpenSC/OpenSC/commit/c246f6f69a749d4f68626b40795a4f69168008f4",
"https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=19208"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2019-20792",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 387986,
"published_at": "2020-04-29T04:15:17.17+00:00"
}