MediumFix available
xen — security advisory
An issue was discovered in Xen 4.8.x through 4.10.x allowing x86 PVH guest OS users to cause a denial of service (NULL pointer dereference and hypervisor crash) by leveraging the mishandling of configurations that lack a Local APIC.
- Products
- xen
- Affected versions
- Not specified
- Fixed versions
- 4.10.0-r2, 4.8.2-r6, 4.9.1-r4
- CVEs
- CVE-2018-7542
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 22:01 UTC · Revision 1
Source evidence
An issue was discovered in Xen 4.8.x through 4.10.x allowing x86 PVH guest OS users to cause a denial of service (NULL pointer dereference and hypervisor crash) by leveraging the mishandling of configurations that lack a Local APIC.
osv:ALPINE-CVE-2018-7542
xen
Fixed versions: 4.10.0-r2
xen
Fixed versions: 4.10.0-r2
xen
Fixed versions: 4.10.0-r2
xen
Fixed versions: 4.10.0-r2
xen
Fixed versions: 4.10.0-r2
xen
Fixed versions: 4.10.0-r2
xen
Fixed versions: 4.10.0-r2
xen
Fixed versions: 4.10.0-r2
xen
Fixed versions: 4.10.0-r2
xen
Fixed versions: 4.10.0-r2
xen
Fixed versions: 4.10.0-r2
xen
Fixed versions: 4.10.0-r2
xen
Fixed versions: 4.10.0-r2
xen
Fixed versions: 4.10.0-r2
xen
Fixed versions: 4.10.0-r2
xen
Fixed versions: 4.8.2-r6
xen
Fixed versions: 4.9.1-r4
xen
Fixed versions: 4.10.0-r2
xen
Fixed versions: 4.10.0-r2
Complete source record
{
"id": "d2e3f858bc4403b0c26695f87f1e90fc1b6c1cd5b94f38e25d08007fbeaf7573",
"url": "https://osv.dev/vulnerability/ALPINE-CVE-2018-7542",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "ALPINE-CVE-2018-7542",
"summary": "An issue was discovered in Xen 4.8.x through 4.10.x allowing x86 PVH guest OS users to cause a denial of service (NULL pointer dereference and hypervisor crash) by leveraging the mishandling of configurations that lack a Local APIC.",
"evidence": "osv:ALPINE-CVE-2018-7542",
"products": [
{
"name": {
"value": "xen",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.10.0-r2",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "xen",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.10.0-r2",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "xen",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
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"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
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{
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"evidence": "/affected/3/package/name"
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{
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"evidence": "/affected/3/ranges"
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"affected_versions": []
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{
"name": {
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},
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{
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}
],
"affected_versions": []
},
{
"name": {
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"evidence": "/affected/5/package/name"
},
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{
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],
"affected_versions": []
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{
"name": {
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{
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"evidence": "/affected/6/ranges"
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"affected_versions": []
},
{
"name": {
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"evidence": "/affected/7/package/name"
},
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{
"value": "4.10.0-r2",
"evidence": "/affected/7/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "xen",
"evidence": "/affected/8/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.10.0-r2",
"evidence": "/affected/8/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "xen",
"evidence": "/affected/9/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.10.0-r2",
"evidence": "/affected/9/ranges"
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],
"affected_versions": []
},
{
"name": {
"value": "xen",
"evidence": "/affected/10/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.10.0-r2",
"evidence": "/affected/10/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "xen",
"evidence": "/affected/11/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.10.0-r2",
"evidence": "/affected/11/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "xen",
"evidence": "/affected/12/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.10.0-r2",
"evidence": "/affected/12/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "xen",
"evidence": "/affected/13/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.10.0-r2",
"evidence": "/affected/13/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "xen",
"evidence": "/affected/14/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.10.0-r2",
"evidence": "/affected/14/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "xen",
"evidence": "/affected/15/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.8.2-r6",
"evidence": "/affected/15/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "xen",
"evidence": "/affected/16/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.9.1-r4",
"evidence": "/affected/16/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "xen",
"evidence": "/affected/17/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.10.0-r2",
"evidence": "/affected/17/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "xen",
"evidence": "/affected/18/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.10.0-r2",
"evidence": "/affected/18/ranges"
}
],
"affected_versions": []
}
],
"severity": "medium",
"structured": {
"id": "ALPINE-CVE-2018-7542",
"aliases": [
"ALPINE-CVE-2018-7542"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "4.8.0"
},
{
"fixed": "4.10.0-r2"
}
]
}
],
"package": {
"name": "xen",
"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.10"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2018-7542.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "4.8.0"
},
{
"fixed": "4.10.0-r2"
}
]
}
],
"package": {
"name": "xen",
"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.11"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2018-7542.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "4.8.0"
},
{
"fixed": "4.10.0-r2"
}
]
}
],
"package": {
"name": "xen",
"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.12"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2018-7542.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
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{
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},
{
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}
]
}
],
"package": {
"name": "xen",
"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.13"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2018-7542.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
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},
{
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}
]
}
],
"package": {
"name": "xen",
"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.14"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2018-7542.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
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"events": [
{
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},
{
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}
]
}
],
"package": {
"name": "xen",
"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.15"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2018-7542.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
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{
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],
"package": {
"name": "xen",
"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.16"
},
"database_specific": {
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{
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{
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],
"package": {
"name": "xen",
"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.17"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2018-7542.json"
},
"ecosystem_specific": {}
},
{
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{
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}
]
}
],
"package": {
"name": "xen",
"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.18"
},
"database_specific": {
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},
"ecosystem_specific": {}
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{
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{
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}
],
"package": {
"name": "xen",
"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.19"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2018-7542.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
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"events": [
{
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},
{
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}
]
}
],
"package": {
"name": "xen",
"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.20"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2018-7542.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
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"events": [
{
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{
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}
]
}
],
"package": {
"name": "xen",
"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.21"
},
"database_specific": {
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},
"ecosystem_specific": {}
},
{
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{
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}
]
}
],
"package": {
"name": "xen",
"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.22"
},
"database_specific": {
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},
"ecosystem_specific": {}
},
{
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{
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{
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}
]
}
],
"package": {
"name": "xen",
"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.23"
},
"database_specific": {
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},
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{
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{
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{
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}
]
}
],
"package": {
"name": "xen",
"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.24"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2018-7542.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "4.8.0"
},
{
"fixed": "4.8.2-r6"
}
]
}
],
"package": {
"name": "xen",
"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.6"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2018-7542.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "4.8.0"
},
{
"fixed": "4.9.1-r4"
}
]
}
],
"package": {
"name": "xen",
"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.7"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2018-7542.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "4.8.0"
},
{
"fixed": "4.10.0-r2"
}
]
}
],
"package": {
"name": "xen",
"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.8"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2018-7542.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "4.8.0"
},
{
"fixed": "4.10.0-r2"
}
]
}
],
"package": {
"name": "xen",
"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.9"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2018-7542.json"
},
"ecosystem_specific": {}
}
],
"modified": "2026-10-23T17:17:55.296802198Z",
"provider": "osv",
"upstream": [
"CVE-2018-7542"
],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2018-7542"
]
},
"related_cves": [
{
"value": "CVE-2018-7542",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 415232,
"published_at": "2018-02-27T19:29:00.7+00:00"
}