HighFix available
openssh — security advisory
Signal handler race condition in OpenSSH before 4.4 allows remote attackers to cause a denial of service (crash), and possibly execute arbitrary code if GSSAPI authentication is enabled, via unspecified vectors that lead to a double-free.
- Products
- openssh
- Affected versions
- Not specified
- Fixed versions
- 1:4.6p1-1
- CVEs
- CVE-2006-5051
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 20:21 UTC · Revision 1
Source evidence
Signal handler race condition in OpenSSH before 4.4 allows remote attackers to cause a denial of service (crash), and possibly execute arbitrary code if GSSAPI authentication is enabled, via unspecified vectors that lead to a double-free.
osv:DEBIAN-CVE-2006-5051
openssh
Fixed versions: 1:4.6p1-1
openssh
Fixed versions: 1:4.6p1-1
openssh
Fixed versions: 1:4.6p1-1
Complete source record
{
"id": "48820cb692a4637b1c4a22db131588442d5f86148358aecda0136609d066b000",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2006-5051",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2006-5051",
"summary": "Signal handler race condition in OpenSSH before 4.4 allows remote attackers to cause a denial of service (crash), and possibly execute arbitrary code if GSSAPI authentication is enabled, via unspecified vectors that lead to a double-free.",
"evidence": "osv:DEBIAN-CVE-2006-5051",
"products": [
{
"name": {
"value": "openssh",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:4.6p1-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "openssh",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:4.6p1-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "openssh",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:4.6p1-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2006-5051",
"aliases": [
"DEBIAN-CVE-2006-5051"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:4.6p1-1"
}
]
}
],
"package": {
"name": "openssh",
"purl": "pkg:deb/debian/openssh?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2006-5051.json"
},
"ecosystem_specific": {
"urgency": "low"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:4.6p1-1"
}
]
}
],
"package": {
"name": "openssh",
"purl": "pkg:deb/debian/openssh?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2006-5051.json"
},
"ecosystem_specific": {
"urgency": "low"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:4.6p1-1"
}
]
}
],
"package": {
"name": "openssh",
"purl": "pkg:deb/debian/openssh?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2006-5051.json"
},
"ecosystem_specific": {
"urgency": "low"
}
}
],
"modified": "2026-10-23T00:01:04.228502557Z",
"provider": "osv",
"upstream": [
"CVE-2006-5051"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2006-5051"
]
},
"related_cves": [
{
"value": "CVE-2006-5051",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 410950,
"published_at": "2006-09-27T23:07:00+00:00"
}