Low
golang-golang-x-sys, google-guest-agent — security advisory
NewNTUnicodeString does not check for string length overflow. When provided with a string that overflows the maximum size of a NTUnicodeString (a 16-bit number of bytes), it returns a truncated string rather than an error.
- Products
- golang-golang-x-sys, google-guest-agent
- Affected versions
- 0.0~git20150612-1, 0.0~git20170727.0.35ef448-1, 0.0~git20170727.0.35ef448-2, 0.0~git20180308.349b81f-1, 0.0~git20190726.fc99dfb-1ubuntu1, 0.0~git20190726.fc99dfb-1ubuntu2, 0.0~git20210124.22da62e-1, 0.0~git20210806.e5e7981-1, 0.0~git20211117.dee7805-1, 0.0~git20211216.1d35b9e-1, 0.13.0-1, 0.15.0-1, 0.16.0-1, 0.17.0-1, 0.22.0-1, 0.38.0-1, 0.45.0+dfsg-1, 0.47.0+dfsg-1, 0.8.0-1, 20201217.02-0ubuntu1~16.04.0, 20201217.02-0ubuntu1~18.04.0, 20201217.02-0ubuntu1~20.04.0, 20210414.00-0ubuntu1~18.04.0, 20210414.00-0ubuntu1~20.04.0, 20210629.00-0ubuntu1, 20210629.00-0ubuntu1~18.04.1, 20210629.00-0ubuntu1~20.04.0, 20210629.00-0ubuntu2, 20220104.00-0ubuntu1, 20220104.00-0ubuntu2, 20220622.00-0ubuntu2~18.04.0, 20220622.00-0ubuntu2~18.04.1, 20220622.00-0ubuntu2~20.04.0, 20220622.00-0ubuntu2~20.04.2, 20220622.00-0ubuntu2~22.04.0, 20220622.00-0ubuntu2~22.04.1, 20230426.00-0ubuntu2~16.04.3, 20230426.00-0ubuntu2~18.04.0, 20230426.00-0ubuntu2~20.04.0, 20230426.00-0ubuntu2~22.04.0, 20230426.00-0ubuntu3, 20231004.02-0ubuntu1, 20231004.02-0ubuntu1~16.04.1, 20231004.02-0ubuntu1~16.04.2, 20231004.02-0ubuntu1~18.04.2, 20231004.02-0ubuntu1~18.04.3, 20231004.02-0ubuntu1~20.04.1, 20231004.02-0ubuntu1~20.04.2, 20231004.02-0ubuntu1~20.04.3, 20231004.02-0ubuntu1~20.04.4, 20231004.02-0ubuntu1~22.04.1, 20231004.02-0ubuntu1~22.04.2, 20231004.02-0ubuntu1~22.04.3, 20231004.02-0ubuntu1~22.04.4, 20231004.02-0ubuntu1~22.04.5, 20231004.02-0ubuntu3, 20240213.00-0ubuntu1, 20240213.00-0ubuntu2, 20240213.00-0ubuntu3, 20240213.00-0ubuntu3.1, 20240213.00-0ubuntu3.2, 20240716.00-0ubuntu1~16.04.0, 20240716.00-0ubuntu1~16.04.0+esm1, 20240716.00-0ubuntu1~16.04.0+esm2, 20240716.00-0ubuntu1~16.04.0+esm3, 20240716.00-0ubuntu1~18.04.0, 20240716.00-0ubuntu1~20.04.0, 20240716.00-0ubuntu1~22.04.0, 20240716.00-0ubuntu1~24.04.0, 20240716.00-0ubuntu1~24.04.1, 20241011.01-0ubuntu1~18.04.0, 20241011.01-0ubuntu1~18.04.0+esm1, 20241011.01-0ubuntu1~18.04.0+esm2, 20241011.01-0ubuntu1~18.04.0+esm3, 20241011.01-0ubuntu1~20.04.1, 20241011.01-0ubuntu1~22.04.0, 20241011.01-0ubuntu1~24.04.0, 20250116.00-0ubuntu1~20.04.0, 20250116.00-0ubuntu1~20.04.0+esm1, 20250116.00-0ubuntu1~20.04.0+esm2, 20250116.00-0ubuntu1~20.04.0+esm3, 20250116.00-0ubuntu1~22.04.0, 20250116.00-0ubuntu1~22.04.1, 20250116.00-0ubuntu1~22.04.2, 20250116.00-0ubuntu1~22.04.3, 20250116.00-0ubuntu1~22.04.4, 20250116.00-0ubuntu1~24.04.0, 20250116.00-0ubuntu1~24.04.1, 20250116.00-0ubuntu1~24.04.2, 20250116.00-0ubuntu1~24.04.3, 20250116.00-0ubuntu1~24.04.4, 20250116.00-0ubuntu2, 20250506.01-0ubuntu1, 20250506.01-0ubuntu1.1, 20250506.01-0ubuntu1.2, 20250506.01-0ubuntu2, 20250506.01-0ubuntu2.1, 20250506.01-0ubuntu3, 20260819.00+~20260819.00-0ubuntu1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-39824
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:43 UTC · Revision 1
Source evidence
NewNTUnicodeString does not check for string length overflow. When provided with a string that overflows the maximum size of a NTUnicodeString (a 16-bit number of bytes), it returns a truncated string rather than an error.
osv:UBUNTU-CVE-2026-39824
golang-golang-x-sys
Fixed versions: Not specified
google-guest-agent
Fixed versions: Not specified
golang-golang-x-sys
Fixed versions: Not specified
google-guest-agent
Fixed versions: Not specified
google-guest-agent
Fixed versions: Not specified
golang-golang-x-sys
Fixed versions: Not specified
golang-golang-x-sys
Fixed versions: Not specified
google-guest-agent
Fixed versions: Not specified
golang-golang-x-sys
Fixed versions: Not specified
google-guest-agent
Fixed versions: Not specified
golang-golang-x-sys
Fixed versions: Not specified
google-guest-agent
Fixed versions: Not specified
golang-golang-x-sys
Fixed versions: Not specified
google-guest-agent
Fixed versions: Not specified
golang-golang-x-sys
Fixed versions: Not specified
google-guest-agent
Fixed versions: Not specified
Complete source record
{
"id": "d39a6bfb803e740107271640142962bad023a170eef11f5eb497cd513a929b64",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-39824",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-39824",
"summary": "NewNTUnicodeString does not check for string length overflow. When provided with a string that overflows the maximum size of a NTUnicodeString (a 16-bit number of bytes), it returns a truncated string rather than an error.",
"evidence": "osv:UBUNTU-CVE-2026-39824",
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{
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{
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{
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"evidence": "/affected/1/package/name"
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{
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"evidence": "/affected/1/versions"
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{
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{
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{
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{
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{
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{
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{
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{
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{
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"evidence": "/affected/3/versions"
},
{
"value": "20210629.00-0ubuntu1~18.04.1",
"evidence": "/affected/3/versions"
},
{
"value": "20220622.00-0ubuntu2~18.04.0",
"evidence": "/affected/3/versions"
},
{
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"evidence": "/affected/3/versions"
},
{
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"evidence": "/affected/3/versions"
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{
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{
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{
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{
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{
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"evidence": "/affected/3/versions"
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{
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"evidence": "/affected/3/versions"
},
{
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}
]
},
{
"name": {
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"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
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"evidence": "/affected/4/versions"
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{
"value": "20210414.00-0ubuntu1~20.04.0",
"evidence": "/affected/4/versions"
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{
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"evidence": "/affected/4/versions"
},
{
"value": "20220622.00-0ubuntu2~20.04.0",
"evidence": "/affected/4/versions"
},
{
"value": "20220622.00-0ubuntu2~20.04.2",
"evidence": "/affected/4/versions"
},
{
"value": "20230426.00-0ubuntu2~20.04.0",
"evidence": "/affected/4/versions"
},
{
"value": "20231004.02-0ubuntu1~20.04.1",
"evidence": "/affected/4/versions"
},
{
"value": "20231004.02-0ubuntu1~20.04.2",
"evidence": "/affected/4/versions"
},
{
"value": "20231004.02-0ubuntu1~20.04.3",
"evidence": "/affected/4/versions"
},
{
"value": "20231004.02-0ubuntu1~20.04.4",
"evidence": "/affected/4/versions"
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{
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},
{
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"evidence": "/affected/4/versions"
},
{
"value": "20250116.00-0ubuntu1~20.04.0",
"evidence": "/affected/4/versions"
},
{
"value": "20250116.00-0ubuntu1~20.04.0+esm1",
"evidence": "/affected/4/versions"
},
{
"value": "20250116.00-0ubuntu1~20.04.0+esm2",
"evidence": "/affected/4/versions"
},
{
"value": "20250116.00-0ubuntu1~20.04.0+esm3",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "golang-golang-x-sys",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.0~git20190726.fc99dfb-1ubuntu1",
"evidence": "/affected/5/versions"
},
{
"value": "0.0~git20190726.fc99dfb-1ubuntu2",
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]
},
{
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{
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{
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},
{
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},
{
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]
},
{
"name": {
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},
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{
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},
{
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{
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},
{
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{
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},
{
"value": "20220622.00-0ubuntu2~22.04.1",
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{
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{
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},
{
"value": "20231004.02-0ubuntu1~22.04.2",
"evidence": "/affected/7/versions"
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{
"value": "20231004.02-0ubuntu1~22.04.3",
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},
{
"value": "20231004.02-0ubuntu1~22.04.4",
"evidence": "/affected/7/versions"
},
{
"value": "20231004.02-0ubuntu1~22.04.5",
"evidence": "/affected/7/versions"
},
{
"value": "20240716.00-0ubuntu1~22.04.0",
"evidence": "/affected/7/versions"
},
{
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"evidence": "/affected/7/versions"
},
{
"value": "20250116.00-0ubuntu1~22.04.0",
"evidence": "/affected/7/versions"
},
{
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"evidence": "/affected/7/versions"
},
{
"value": "20250116.00-0ubuntu1~22.04.2",
"evidence": "/affected/7/versions"
},
{
"value": "20250116.00-0ubuntu1~22.04.3",
"evidence": "/affected/7/versions"
},
{
"value": "20250116.00-0ubuntu1~22.04.4",
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}
]
},
{
"name": {
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},
"prerequisites": [],
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"affected_versions": [
{
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{
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{
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{
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{
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]
},
{
"name": {
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},
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{
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},
{
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{
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},
{
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},
{
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},
{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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},
{
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]
},
{
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},
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{
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{
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},
{
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{
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{
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},
{
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{
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{
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{
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},
{
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},
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{
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{
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]
},
{
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},
"prerequisites": [],
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{
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},
{
"value": "20250506.01-0ubuntu2",
"evidence": "/affected/15/versions"
},
{
"value": "20250506.01-0ubuntu2.1",
"evidence": "/affected/15/versions"
}
]
}
],
"severity": "low",
"structured": {
"id": "UBUNTU-CVE-2026-39824",
"aliases": [
"UBUNTU-CVE-2026-39824"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "golang-golang-x-sys",
"purl": "pkg:deb/ubuntu/golang-golang-x-sys?arch=source&distro=xenial",
"ecosystem": "Ubuntu:16.04:LTS"
},
"versions": [
"0.0~git20150612-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-39824.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "golang-golang-x-sys-dev",
"binary_version": "0.0~git20150612-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "google-guest-agent",
"purl": "pkg:deb/ubuntu/google-guest-agent?arch=source&distro=esm-apps-legacy%2Fxenial",
"ecosystem": "Ubuntu:Pro:16.04:LTS"
},
"versions": [
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"20230426.00-0ubuntu2~16.04.3",
"20231004.02-0ubuntu1~16.04.1",
"20231004.02-0ubuntu1~16.04.2",
"20240716.00-0ubuntu1~16.04.0",
"20240716.00-0ubuntu1~16.04.0+esm1",
"20240716.00-0ubuntu1~16.04.0+esm2",
"20240716.00-0ubuntu1~16.04.0+esm3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-39824.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "google-guest-agent",
"binary_version": "20240716.00-0ubuntu1~16.04.0+esm3"
}
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],
"modified": "2026-10-17T12:58:51.546505854Z",
"provider": "osv",
"upstream": [
"CVE-2026-39824"
],
"references": [
"https://ubuntu.com/security/CVE-2026-39824",
"https://www.cve.org/CVERecord?id=CVE-2026-39824",
"https://groups.google.com/g/golang-announce/c/6MMI8Lj-Atg",
"https://github.com/golang/go/issues/78916",
"https://go.dev/cl/770080",
"https://go.dev/issue/78916",
"https://pkg.go.dev/vuln/GO-2026-5024"
]
},
"related_cves": [
{
"value": "CVE-2026-39824",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 359117,
"published_at": "2026-05-22T20:16:00+00:00"
}