freerdp: Fix of 3 CVEs
- CVE-2026-33985: fix information leak in ClearCodec glyph index decode; validate nWidth*nHeight for overflow and update glyphEntry->count only after a successful realloc so subsequent reads cannot expose adjacent heap memory - CVE-2022-39283: fix missing length check in /video channel data handler; verify the stream contains cbSample bytes before using Stream_Pointer(), preventing decode of uninitialized data past the received payload - CVE-2022-39282: fix length handling in /parallel driver; zero-initialize the read buffer with calloc and return only the bytes actually read from the port, preventing leakage of uninitialized client memory to the server
- Products
- freerdp, freerdp-devel, freerdp-libs, libwinpr, libwinpr-devel
- Affected versions
- Not specified
- Fixed versions
- 2.1.1-5.el7_9.tuxcare.els20
- CVEs
- CVE-2022-39282, CVE-2022-39283, CVE-2026-33985
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 13:54 UTC · Revision 1
Source evidence
- CVE-2026-33985: fix information leak in ClearCodec glyph index decode; validate nWidth*nHeight for overflow and update glyphEntry->count only after a successful realloc so subsequent reads cannot expose adjacent heap memory - CVE-2022-39283: fix missing length check in /video channel data handler; verify the stream contains cbSample bytes before using Stream_Pointer(), preventing decode of uninitialized data past the received payload - CVE-2022-39282: fix length handling in /parallel driver; zero-initialize the read buffer with calloc and return only the bytes actually read from the port, preventing leakage of uninitialized client memory to the server
osv:CLSA-2026-1777663444
freerdp
Fixed versions: 2.1.1-5.el7_9.tuxcare.els20
freerdp-devel
Fixed versions: 2.1.1-5.el7_9.tuxcare.els20
freerdp-libs
Fixed versions: 2.1.1-5.el7_9.tuxcare.els20
libwinpr
Fixed versions: 2.1.1-5.el7_9.tuxcare.els20
libwinpr-devel
Fixed versions: 2.1.1-5.el7_9.tuxcare.els20
Complete source record
{
"id": "5c8f678030bf11c7593d911845835414a33294f85c623c237d341cb3416034d7",
"url": "https://osv.dev/vulnerability/CLSA-2026-1777663444",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "freerdp: Fix of 3 CVEs",
"summary": "- CVE-2026-33985: fix information leak in ClearCodec glyph index decode; validate nWidth*nHeight for overflow and update glyphEntry->count only after a successful realloc so subsequent reads cannot expose adjacent heap memory - CVE-2022-39283: fix missing length check in /video channel data handler; verify the stream contains cbSample bytes before using Stream_Pointer(), preventing decode of uninitialized data past the received payload - CVE-2022-39282: fix length handling in /parallel driver; zero-initialize the read buffer with calloc and return only the bytes actually read from the port, preventing leakage of uninitialized client memory to the server",
"evidence": "osv:CLSA-2026-1777663444",
"products": [
{
"name": {
"value": "freerdp",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.1.1-5.el7_9.tuxcare.els20",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "freerdp-devel",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.1.1-5.el7_9.tuxcare.els20",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "freerdp-libs",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.1.1-5.el7_9.tuxcare.els20",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libwinpr",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.1.1-5.el7_9.tuxcare.els20",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libwinpr-devel",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.1.1-5.el7_9.tuxcare.els20",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1777663444",
"aliases": [
"CLSA-2026-1777663444"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.1.1-5.el7_9.tuxcare.els20"
}
]
}
],
"package": {
"name": "freerdp",
"purl": "pkg:rpm/tuxcare/freerdp?distro=centos-7",
"ecosystem": "TuxCare:CentOS:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos7els/CLSA-2026-1777663444.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.1.1-5.el7_9.tuxcare.els20"
}
]
}
],
"package": {
"name": "freerdp-devel",
"purl": "pkg:rpm/tuxcare/freerdp-devel?distro=centos-7",
"ecosystem": "TuxCare:CentOS:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos7els/CLSA-2026-1777663444.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.1.1-5.el7_9.tuxcare.els20"
}
]
}
],
"package": {
"name": "freerdp-libs",
"purl": "pkg:rpm/tuxcare/freerdp-libs?distro=centos-7",
"ecosystem": "TuxCare:CentOS:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos7els/CLSA-2026-1777663444.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.1.1-5.el7_9.tuxcare.els20"
}
]
}
],
"package": {
"name": "libwinpr",
"purl": "pkg:rpm/tuxcare/libwinpr?distro=centos-7",
"ecosystem": "TuxCare:CentOS:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos7els/CLSA-2026-1777663444.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.1.1-5.el7_9.tuxcare.els20"
}
]
}
],
"package": {
"name": "libwinpr-devel",
"purl": "pkg:rpm/tuxcare/libwinpr-devel?distro=centos-7",
"ecosystem": "TuxCare:CentOS:7"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos7els/CLSA-2026-1777663444.json"
}
}
],
"modified": "2026-10-21T10:47:51.703120961Z",
"provider": "osv",
"upstream": [
"CVE-2022-39282",
"CVE-2022-39283",
"CVE-2026-33985"
],
"references": [
"https://errata.tuxcare.com/els_os/centos7els/CLSA-2026-1777663444.html"
]
},
"related_cves": [
{
"value": "CVE-2022-39282",
"evidence": "/upstream"
},
{
"value": "CVE-2022-39283",
"evidence": "/upstream"
},
{
"value": "CVE-2026-33985",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 392417,
"published_at": "2026-05-05T21:09:06+00:00"
}