MediumFix available
xen — security advisory
A PV guest could DoS Xen while unmapping a grant To address XSA-380, reference counting was introduced for grant mappings for the case where a PV guest would have the IOMMU enabled. PV guests can request two forms of mappings. When both are in use for any individual mapping, unmapping of such a mapping can be requested in two steps. The reference count for such a mapping would then mistakenly be decremented twice. Underflow of the counters gets detected, resulting in the triggering of a hypervisor bug check.
- Products
- xen
- Affected versions
- Not specified
- Fixed versions
- 4.13.4-r3, 4.14.5-r0, 4.15.2-r0, 4.16.1-r0
- CVEs
- CVE-2022-23034
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 14:10 UTC · Revision 1
Source evidence
A PV guest could DoS Xen while unmapping a grant To address XSA-380, reference counting was introduced for grant mappings for the case where a PV guest would have the IOMMU enabled. PV guests can request two forms of mappings. When both are in use for any individual mapping, unmapping of such a mapping can be requested in two steps. The reference count for such a mapping would then mistakenly be decremented twice. Underflow of the counters gets detected, resulting in the triggering of a hypervisor bug check.
osv:ALPINE-CVE-2022-23034
xen
Fixed versions: 4.13.4-r3
xen
Fixed versions: 4.14.5-r0
xen
Fixed versions: 4.15.2-r0
xen
Fixed versions: 4.15.2-r0
xen
Fixed versions: 4.16.1-r0
xen
Fixed versions: 4.16.1-r0
xen
Fixed versions: 4.16.1-r0
xen
Fixed versions: 4.16.1-r0
xen
Fixed versions: 4.16.1-r0
xen
Fixed versions: 4.16.1-r0
xen
Fixed versions: 4.16.1-r0
xen
Fixed versions: 4.16.1-r0
xen
Fixed versions: 4.16.1-r0
Complete source record
{
"id": "0d6389dd23b860e19363a3a81ac2fccb95a4422eafa46e20c34b4a7f63ca5636",
"url": "https://osv.dev/vulnerability/ALPINE-CVE-2022-23034",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "ALPINE-CVE-2022-23034",
"summary": "A PV guest could DoS Xen while unmapping a grant To address XSA-380, reference counting was introduced for grant mappings for the case where a PV guest would have the IOMMU enabled. PV guests can request two forms of mappings. When both are in use for any individual mapping, unmapping of such a mapping can be requested in two steps. The reference count for such a mapping would then mistakenly be decremented twice. Underflow of the counters gets detected, resulting in the triggering of a hypervisor bug check.",
"evidence": "osv:ALPINE-CVE-2022-23034",
"products": [
{
"name": {
"value": "xen",
"evidence": "/affected/0/package/name"
},
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{
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"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
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"evidence": "/affected/1/package/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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],
"affected_versions": []
},
{
"name": {
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"evidence": "/affected/10/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
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"evidence": "/affected/10/ranges"
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],
"affected_versions": []
},
{
"name": {
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"evidence": "/affected/11/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
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"evidence": "/affected/11/ranges"
}
],
"affected_versions": []
},
{
"name": {
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"evidence": "/affected/12/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.16.1-r0",
"evidence": "/affected/12/ranges"
}
],
"affected_versions": []
}
],
"severity": "medium",
"structured": {
"id": "ALPINE-CVE-2022-23034",
"aliases": [
"ALPINE-CVE-2022-23034"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
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{
"fixed": "4.13.4-r3"
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"package": {
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"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.12"
},
"database_specific": {
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},
"ecosystem_specific": {}
},
{
"ranges": [
{
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"events": [
{
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},
{
"fixed": "4.14.5-r0"
}
]
}
],
"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-2022-23034.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
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"events": [
{
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},
{
"fixed": "4.15.2-r0"
}
]
}
],
"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-2022-23034.json"
},
"ecosystem_specific": {}
},
{
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{
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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-2022-23034.json"
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{
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{
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],
"package": {
"name": "xen",
"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.16"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2022-23034.json"
},
"ecosystem_specific": {}
},
{
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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-2022-23034.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": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2022-23034.json"
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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-2022-23034.json"
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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-2022-23034.json"
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"ecosystem": "Alpine:v3.21"
},
"database_specific": {
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],
"package": {
"name": "xen",
"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.22"
},
"database_specific": {
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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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],
"package": {
"name": "xen",
"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.24"
},
"database_specific": {
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},
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}
],
"modified": "2026-10-15T07:17:54.164765883Z",
"provider": "osv",
"upstream": [
"CVE-2022-23034"
],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2022-23034"
]
},
"related_cves": [
{
"value": "CVE-2022-23034",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 321699,
"published_at": "2022-01-25T14:15:09.01+00:00"
}