HighFix available
xen — security advisory
An issue was discovered in Xen 4.11 allowing HVM guest OS users to cause a denial of service (host OS crash) or possibly gain host OS privileges because x86 IOREQ server resource accounting (for external emulators) was mishandled.
- Products
- xen
- Affected versions
- Not specified
- Fixed versions
- 4.11.1-r0
- CVEs
- CVE-2018-19963
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 21:59 UTC · Revision 1
Source evidence
An issue was discovered in Xen 4.11 allowing HVM guest OS users to cause a denial of service (host OS crash) or possibly gain host OS privileges because x86 IOREQ server resource accounting (for external emulators) was mishandled.
osv:ALPINE-CVE-2018-19963
xen
Fixed versions: 4.11.1-r0
xen
Fixed versions: 4.11.1-r0
xen
Fixed versions: 4.11.1-r0
xen
Fixed versions: 4.11.1-r0
xen
Fixed versions: 4.11.1-r0
xen
Fixed versions: 4.11.1-r0
xen
Fixed versions: 4.11.1-r0
xen
Fixed versions: 4.11.1-r0
xen
Fixed versions: 4.11.1-r0
xen
Fixed versions: 4.11.1-r0
xen
Fixed versions: 4.11.1-r0
xen
Fixed versions: 4.11.1-r0
xen
Fixed versions: 4.11.1-r0
xen
Fixed versions: 4.11.1-r0
xen
Fixed versions: 4.11.1-r0
xen
Fixed versions: 4.11.1-r0
Complete source record
{
"id": "b1e187696694e366fd7c875b8f0365916d0f7cf23723f9c146cebdb0acc90165",
"url": "https://osv.dev/vulnerability/ALPINE-CVE-2018-19963",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "ALPINE-CVE-2018-19963",
"summary": "An issue was discovered in Xen 4.11 allowing HVM guest OS users to cause a denial of service (host OS crash) or possibly gain host OS privileges because x86 IOREQ server resource accounting (for external emulators) was mishandled.",
"evidence": "osv:ALPINE-CVE-2018-19963",
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{
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{
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],
"severity": "high",
"structured": {
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"aliases": [
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],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H"
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"affected": [
{
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{
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"database_specific": {
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},
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},
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{
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],
"package": {
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"ecosystem": "Alpine:v3.9"
},
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],
"modified": "2026-10-23T17:17:55.240946128Z",
"provider": "osv",
"upstream": [
"CVE-2018-19963"
],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2018-19963"
]
},
"related_cves": [
{
"value": "CVE-2018-19963",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 415131,
"published_at": "2018-12-08T04:29:00.327+00:00"
}