LowFix available
xen — security advisory
Arm provides multiple helpers to clean & invalidate the cache for a given region. This is, for instance, used when allocating guest memory to ensure any writes (such as the ones during scrubbing) have reached memory before handing over the page to a guest. Unfortunately, the arithmetics in the helpers can overflow and would then result to skip the cache cleaning/invalidation. Therefore there is no guarantee when all the writes will reach the memory. This undefined behavior was meant to be addressed by XSA-437, but the approach was not sufficient.
- Products
- xen
- Affected versions
- Not specified
- Fixed versions
- 4.16.5-r5, 4.17.2-r5, 4.18.0-r2
- CVEs
- CVE-2023-46837
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 15:02 UTC · Revision 1
Source evidence
Arm provides multiple helpers to clean & invalidate the cache for a given region. This is, for instance, used when allocating guest memory to ensure any writes (such as the ones during scrubbing) have reached memory before handing over the page to a guest. Unfortunately, the arithmetics in the helpers can overflow and would then result to skip the cache cleaning/invalidation. Therefore there is no guarantee when all the writes will reach the memory. This undefined behavior was meant to be addressed by XSA-437, but the approach was not sufficient.
osv:ALPINE-CVE-2023-46837
xen
Fixed versions: 4.16.5-r5
xen
Fixed versions: 4.16.5-r5
xen
Fixed versions: 4.17.2-r5
xen
Fixed versions: 4.18.0-r2
xen
Fixed versions: 4.18.0-r2
xen
Fixed versions: 4.18.0-r2
xen
Fixed versions: 4.18.0-r2
xen
Fixed versions: 4.18.0-r2
xen
Fixed versions: 4.18.0-r2
Complete source record
{
"id": "3438e7ea922ee089557dc7c53371a79116829f3a6d2ceedfce91e7af0f84a3dc",
"url": "https://osv.dev/vulnerability/ALPINE-CVE-2023-46837",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "ALPINE-CVE-2023-46837",
"summary": "Arm provides multiple helpers to clean & invalidate the cache for a given region. This is, for instance, used when allocating guest memory to ensure any writes (such as the ones during scrubbing) have reached memory before handing over the page to a guest. Unfortunately, the arithmetics in the helpers can overflow and would then result to skip the cache cleaning/invalidation. Therefore there is no guarantee when all the writes will reach the memory. This undefined behavior was meant to be addressed by XSA-437, but the approach was not sufficient.",
"evidence": "osv:ALPINE-CVE-2023-46837",
"products": [
{
"name": {
"value": "xen",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.16.5-r5",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "xen",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.16.5-r5",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "xen",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.17.2-r5",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "xen",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.18.0-r2",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "xen",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.18.0-r2",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "xen",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.18.0-r2",
"evidence": "/affected/5/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "xen",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.18.0-r2",
"evidence": "/affected/6/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "xen",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.18.0-r2",
"evidence": "/affected/7/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "xen",
"evidence": "/affected/8/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.18.0-r2",
"evidence": "/affected/8/ranges"
}
],
"affected_versions": []
}
],
"severity": "low",
"structured": {
"id": "ALPINE-CVE-2023-46837",
"aliases": [
"ALPINE-CVE-2023-46837"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.16.5-r5"
}
]
}
],
"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-2023-46837.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.16.5-r5"
}
]
}
],
"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-2023-46837.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.17.2-r5"
}
]
}
],
"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-2023-46837.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.18.0-r2"
}
]
}
],
"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-2023-46837.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.18.0-r2"
}
]
}
],
"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-2023-46837.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.18.0-r2"
}
]
}
],
"package": {
"name": "xen",
"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.21"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2023-46837.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.18.0-r2"
}
]
}
],
"package": {
"name": "xen",
"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.22"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2023-46837.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.18.0-r2"
}
]
}
],
"package": {
"name": "xen",
"purl": "pkg:apk/alpine/xen?arch=source",
"ecosystem": "Alpine:v3.23"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2023-46837.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.18.0-r2"
}
]
}
],
"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-2023-46837.json"
},
"ecosystem_specific": {}
}
],
"modified": "2026-10-26T17:17:58.649495439Z",
"provider": "osv",
"upstream": [
"CVE-2023-46837"
],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2023-46837"
]
},
"related_cves": [
{
"value": "CVE-2023-46837",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 454546,
"published_at": "2024-01-05T17:15:11.247+00:00"
}