UnratedFix available
libxfont — security advisory
Integer overflow in the scan_cidfont function in X.Org 6.8.2 and XFree86 X server allows local users to execute arbitrary code via crafted (1) CMap and (2) CIDFont font data with modified item counts in the (a) begincodespacerange, (b) cidrange, and (c) notdefrange sections.
- Products
- libxfont
- Affected versions
- Not specified
- Fixed versions
- 1:1.2.2-1
- CVEs
- CVE-2006-3740
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 20:17 UTC · Revision 1
Source evidence
Integer overflow in the scan_cidfont function in X.Org 6.8.2 and XFree86 X server allows local users to execute arbitrary code via crafted (1) CMap and (2) CIDFont font data with modified item counts in the (a) begincodespacerange, (b) cidrange, and (c) notdefrange sections.
osv:DEBIAN-CVE-2006-3740
libxfont
Fixed versions: 1:1.2.2-1
libxfont
Fixed versions: 1:1.2.2-1
libxfont
Fixed versions: 1:1.2.2-1
Complete source record
{
"id": "aaee16e1a7b672f8848be4594b66687831abde90059f3887f157aafa0615846c",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2006-3740",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2006-3740",
"summary": "Integer overflow in the scan_cidfont function in X.Org 6.8.2 and XFree86 X server allows local users to execute arbitrary code via crafted (1) CMap and (2) CIDFont font data with modified item counts in the (a) begincodespacerange, (b) cidrange, and (c) notdefrange sections.",
"evidence": "osv:DEBIAN-CVE-2006-3740",
"products": [
{
"name": {
"value": "libxfont",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:1.2.2-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libxfont",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:1.2.2-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libxfont",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:1.2.2-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "DEBIAN-CVE-2006-3740",
"aliases": [
"DEBIAN-CVE-2006-3740"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.2.2-1"
}
]
}
],
"package": {
"name": "libxfont",
"purl": "pkg:deb/debian/libxfont?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2006-3740.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.2.2-1"
}
]
}
],
"package": {
"name": "libxfont",
"purl": "pkg:deb/debian/libxfont?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2006-3740.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.2.2-1"
}
]
}
],
"package": {
"name": "libxfont",
"purl": "pkg:deb/debian/libxfont?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2006-3740.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-22T23:47:30.052845214Z",
"provider": "osv",
"upstream": [
"CVE-2006-3740"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2006-3740"
]
},
"related_cves": [
{
"value": "CVE-2006-3740",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 410702,
"published_at": "2006-09-13T01:07:00+00:00"
}